"Enthalpy Change Of Reaction Lab Report Use Sodium Hydroxide Hydrochloric Acid And Water" Essays and Research Papers

  • Enthalpy Change Of Reaction Lab Report Use Sodium Hydroxide Hydrochloric Acid And Water

    Title : Expt.1 Determination of the enthalpy (heat) of reaction of a monobasic acid with sodium hydroxide Experiment no : 1 Experiment title : Determination of the enthalpy (heat) of reaction of a monobasic acid with sodium hydroxide Objectives: 1) To understand the enthalpy chemistry. 2) To determine the calorimeter constant. 3) To determine the enthalpy reaction of acid-base reactions. 4) To study the exothermic reaction. Apparatus and Materials : * Dewar...

    Energy, Enthalpy, Entropy 1870  Words | 7  Pages

  • Enthalpy change of reaction

    with chemical reactions and/or physical transformations. A reaction may release or absorb energy, and a phase may change, such as in melting and boiling. Thermochemistry focuses on these energy changes, particularly on the system's energy exchange with its surroundings. In combination with entropy determinations, it is used to predict whether a reaction is spontaneous or non-spontaneous, favourable or unfavourable. Chemical reactions can be divided into two based on the energy changes that occur during...

    Chemical reaction, Chemistry, Energy 1551  Words | 6  Pages

  • Thermochemistry: Solid Sodium Hydroxide

    Thermochemistry Lab #2 -   Heat of Reaction - Hess's Law          Return The foundation of the study of thermochemistry was laid by the chemist Germain Hess, who investigated heat in chemical reactions during the last century. One statement of the law that bears Hess's name says: The enthalpy change for any reaction depends on the products and reactants and is independent of the pathway or the number of steps between the reactant and product. In this experiment, you will measure and compare...

    Chemical reaction, Chlorine, Enthalpy 1113  Words | 5  Pages

  • Thermodynamics, Enthalpy of Reaction Lab

    Name Lab Partner Name(s) Thermodynamics, Enthalpy of Reaction Lab March 27, 2014 I. Purpose The purpose of this lab is to learn how to determine the heat of reaction. II. Safety 1. Wear appropriate safety attire (goggles, aprons, hair tie, etc.). 2. Do not directly inhale or ingest chemicals. 3. Understand safety information regarding the chemicals being handled during the lab (hydrochloric acid, sodium hydroxide). 4. Be aware of how to operate all lab equipment. 5. Clean hands...

    Calorimeter, Chemistry, Energy 735  Words | 3  Pages

  • Determination of Enthalpy

    the Enthalpy of a Chemical Reaction All chemical reactions involve an exchange of heat energy; therefore, it is tempting to plan to follow a reaction by measuring the enthalpy change (∆H). However, it is often not possible to directly measure the heat energy change of the reactants and products (the system). We can measure the heat change that occurs in the surroundings by monitoring temperature changes. If we conduct a reaction between two substances in aqueous solution, then the enthalpy of...

    Ammonia, Chemical reaction, Chemistry 1206  Words | 6  Pages

  • Reacting Acids and Bases Lab Report

    Reacting Acids and Bases Lab Report Introduction Every liquid, except for distilled water, has either acidic or basic traits. An acid is sour tasting, and gives a sharp stinging pain in a cut or wound, and bases taste bitter, and feel slippery. A pH scale is used to determine what traits a liquid has; acidic or basic. The scale focuses on OH- (hydroxide ions) and H+ (hydrogen ions). The scale goes from 0 to 14. 7 is distilled water, as it is directly in the middle; neither acidic or basic. Acids are...

    Acid, Base, Chlorine 716  Words | 3  Pages

  • Calculation on the Molar Enthalpy Change of a Neutralization Reaction

    molar enthalpy change of a neutralization reaction Principle H2SO4(aq)+2NaOH(aq)=Na2SO4(aq)+2H2O(l) The reaction is a exothermic reaction, when the heat released by it is absorbed by water, the temperature of the water increases. The heat produced by the reaction can be calculated if it is assumed that all the heat is absorbed by the water. Heat change of reaction=-heat change of water =-mH2O×cH2O×△TH2O As the water has gained the heat produced by the reaction, the heat change of reaction is negative...

    Acid, Energy, Entropy 1364  Words | 5  Pages

  • Enthalpy of Reactants Lab Report

    in a Chemical Reaction 9/6/13 Introduction The purposes of this lab are to measure the temperature change of the reaction between solutions of sodium hydroxide and phosphoric acid, calculate the enthalpy, H, of neutralization of phosphoric acid, and compare the calculated enthalpy neutralization with the accepted value. Theory Calorimetry is the measurement of change of heat in a reaction. A calorimeter is a tool to measure the amount of heat exchange in a chemical reaction (Helmenstine,...

    Acid, Chemistry, Energy 593  Words | 4  Pages

  • Thermochemistry Lab

    to calculate the enthalpy change occurring in the first of reaction of sodium hydroxide with hydrochloric acid and sodium hydroxide with ammonium chloride. Using Hess’ Law and the results for the enthalpy change of the first two reactions should give the enthalpy change of the third reaction of ammonia with hydrochloric acid. Procedure: Part 1: Construct a calorimeter of two nested stereophony cups where the cover has a hole to fir a thermometer. Measure 50ml distilled water at room temperature...

    Absolute zero, Ammonia, Chlorine 473  Words | 4  Pages

  • Lab Work Chemical Changes

    Observation of Chemical Changes Purpose In this experiment, the student studied the composition of materials in a setting where the indications of chemical changes were safely observed. The changes observed consisted of bubble formation, colors, viscosity, and precipitate formation. Procedure Using a well plate: use a different well for each chemical combination. Two drops (unless otherwise noted) of each chemical in the combinations (below) should be placed in one well. A dark and light...

    Acid, Ammonia, Base 556  Words | 3  Pages

  • Reaction Lab

    Reactions in Aqueous Solutions: Metathesis Reactions and Net Ionic Equations Introduction: Metathesis or double decomposition reactions are a reaction in which two compounds react to form two new compounds, with no changes in oxidation number. The ions of two compounds exchange partners. AX + BY  AY + BX This reaction can occur between two inorganic salts when one product is insoluble in water, driving the reaction forward. A typical example is as followed and is considered a molecular...

    Ammonia, Chemical equation, Chemical reaction 1032  Words | 5  Pages

  • chem lab 3

    Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file...

    Chemical reaction, Chemistry, Chlorine 420  Words | 3  Pages

  • Investigate Temperature Change During a Neutralization Reaction

    Investigate temperature change during a neutralization reaction Introduction: When an alkali neutralizes an acid, a salt and water are formed. Aqueous hydrogen ions (H+(aq)) from the acid react with the hydroxide ions (OH-(aq)) from the alkali, forming water. For hydrochloric acid and sodium hydroxide: H+(aq) + Cl-(aq) + Na+(aq) + OH-(aq) → Na+(aq) + Cl-(aq) + H2O(l) Hydrochloric acid Hydrochloric acid Sodium Chloride Sodium Chloride Sodium Hydroxide Sodium Hydroxide Neutralization...

    Chemical reaction, Chemistry, Chlorine 889  Words | 4  Pages

  • Observation of Chemical changes

    Observations of Chemical Changes Experiment 1 Chemistry 111 September 3,2014 Ashley Mattox Abstract: The purposes of this lab is to observe the reactions of some common chemicals contained in consumer products and observe the macroscopic changes these chemicals undergo. Purpose: The purpose of the lab is to be able to interpret underlying macroscopic changes in terms of the behavior of atoms and molecules and also to learn how to separate mixtures into their...

    Acid, Base, Chemical reaction 1139  Words | 5  Pages

  • Analysis of Acid by Titration with Sodium Hydroxide

    of acid by titration with sodium hydroxide Ms. Hoang November 2012 Introduction: The purpose of this experiment is to demonstrate an example of how to determine the unknown molarity of hydrochloric acid by titration with a base (sodium hydroxide). Titration is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of an identified analyte (wekipedia). The first step will be measuring and combining water and acid (Hydrochloric acid)...

    Acid, Base, Chemistry 1163  Words | 4  Pages

  • Determination of Enthalpy Change of Neutralization

    DETERMINATION OF ENTHALPY CHANGE OF NEUTRALIZATION IA Criteria Assessed: DCP CE MS Introduction When an alkali neutralizes an acid, a salt and water are formed. Aqueous hydrogen ions (H+(aq)) from the acid react with the hydroxide ions (OH- (aq)) from alkali, forming water. The identity of salt will depend on the nature of the acid and alkali used. H+(aq) + OH- (aq) → H2O(L) The combination of H+ and OH- ions in this way releases energy. In this practical, the enthalpy changes accompanying...

    Acid, Base, Enthalpy 1572  Words | 7  Pages

  • Acids and Alkalis

    Acids, Bases, Alkalis, Salts 1. Acids have a pH of less than 7.  2. Bases have a pH of more than 7. 3. When bases are dissolved in water, they are known as alkalis. 4. Salts are made when an acid reacts with a base, carbonate or metal. The name of the salt formed depends on the metal in the base and the acid used. For example, salts made using hydrochloric acid are called chlorides. Acids Substances with a pH of less than 7 are acids. The more strongly acidic the solution, the lower its...

    Acid, Ammonia, Base 831  Words | 6  Pages

  • Using Titration to Examine Changes in pH with Hydrochloric Acid and Sodium Hydroxide

    to Examine Changes in pH with Hydrochloric Acid and Sodium Hydroxide Abstract Examine the buffering capacity of H2O, acetic acid, and acetate when titrated with NaOH and HCL. A good buffer will somewhat resist a great change in pH. It is common knowledge that water is not a good buffer, and this was confirmed in this experiment. Acetate demonstrated an excellent buffering capacity because it took a large volume of the acid or base to make a significant change in the pH. Acetic acid, while already...

    Acetic acid, Acid, Acid dissociation constant 1017  Words | 4  Pages

  • Detecting Signs of Chemical Change

    Detecting Signs of Chemical Change REAC 399 Prepared by: Elizabeth G. Perez Date of experiment: October 3, 2006 Course: Chemistry 100/60 Abstract: The objective of this experiment will be to combine various substances, liquids and metals, and to observe their behavior when they are combined. The types of reactions observed shall determine the nature of these reactions: physical or chemical. Introduction: An elements¡¦ reaction to certain substances may be predicted by its...

    Acid, Ammonia, Chemical reaction 1412  Words | 6  Pages

  • Thermochemistry: Enthalpy Changes in Simple Processes

    Introduction The primary objective of this lab is to be able to determine the specific heat of a reaction by using a calorimeter. A calorimeter is a device used to determine the specific heat of chemical reaction or a physical change. The specific heat a reactions is used to refer to the amount of heat that is lost or gained when one gram of a particular substance increases or decreases by one degree Celsius. When a chemical reaction occurs in an open container most of the energy gained or lost...

    Absolute zero, Ammonia, Heat 2451  Words | 6  Pages

  • Cu Recycle Lab

    Recycling Lab Mr. Nelson – Chemistry Purpose: The purpose of this lab is to carry out an extensive series of reactions based on the element copper. These reactions include; synthesis, decomposition, single and double replacement. In this experiment, recycling will also be introduced. Procedure: See attached Story board. Data and Observations and Data Analysis: Step Word Equation 1 Balanced Chemical Equation Type of Reaction Observations Copper + nitric Cu + 4HNO3 acid à copper(II)...

    Aluminium, Chemical reaction, Chlorine 401  Words | 5  Pages

  • LAB REPORT THERMODYNAMIC

    Thermodynamics- Enthalpy of Reaction and Hess’s Law December 5, 2011 Kylie Case, Emma McKee, Rebecca Smith Purpose: In this lab, the purpose was to verify Hess’s Law. Theory: Four main topics were covered during this experiment including enthalpy of reaction, heat of formation, Hess’s Law, and calorimetry. The first being enthalpy of reaction, ΔHrxn, which is the heat or enthalpy change for a chemical reaction. The energy change is equal to the amount of heat transferred at a constant...

    Energy, Enthalpy, Entropy 1399  Words | 6  Pages

  • Lab Report

    CHM111 Anita Mohan 03-11-2013 Experiment: Chemical reactions, and Equations Materials: 3 mL of copper(II) sulfate solution. 5 mL of 6 M HCl piece of zinc wooden splint test tube Bunsen burner 3 mL of zinc chloride solution. pentahydrate distill water ...

    Chemical reaction, Chemistry, Chlorine 629  Words | 3  Pages

  • Acid and Base Report Qualitative Data

    Acids and Bases Labs Report Aim: To study the characteristics of acids and bases. Experiment 1 Magnesium Ribbon with Sulphuric Acid |Observations | |Material/substance |Rate of reaction |Bubbles |Initial colour |Final colour |Other Observations | |H2SO4 |N/A |N/A |Colourless...

    Ammonia, Carbon dioxide, Chlorine 459  Words | 4  Pages

  • Enthalpy Change

    Task 1: Assessment criterion 2.1 Determine the enthalpy change for the reaction (ΔHfθ) between zinc and copper sulphate solution, giving full practical details. Aim To determine the enthalpy change for the reaction between zinc and copper sulphate. Zn (s) + CuSO4 (aq) ZnSO4 (aq) + Cu (s) Introduction In the study of energy (thermodynamics) the system refers to the reacting chemicals (zinc and copper sulphate solution) and the surroundings is everything else (atmosphere...

    Atom, Chemical bond, Covalent bond 530  Words | 4  Pages

  • Chemistry Lab Report- Exo and Endothermic Reactions

    chemical reactions and determine if they are exothermic or endothermic. Apparatus: • Test tubes {Around 10-12 in number} • Test-tube rack • Spatula • Digital thermometer { ± 0.1° C} • Digital balance {± 0.01 g} • Measuring cylinder {± 0.5cm³} • Different chemicals Introduction/Theory: Exothermic reactions are those reactions that release energy in the form of heat. Endothermic reactions need to absorb energy in the form of heat to proceed. Enthalpy is the...

    Chlorine, Exothermic, Exothermic reaction 967  Words | 6  Pages

  • Chemistry Rates of Reaction Coursework: Sodium Thiosulphate and Hydrochloric Acid

    investigation to show how the rate of reaction between hydrochloric acid and sodium thiosulphate is affected by the concentration of the acid Simple Procedure Place a conical flask on a piece of paper with a cross on it. Add hydrochloric acid and sodium thiosulphate, and record the amount of time taken for the cross to disappear through the solution from the top of the flask. Record this time and repeat this for different concentrations of hydrochloric acid. Fair Test The variables in this...

    Chemical reaction, Chemistry, Chlorine 1036  Words | 5  Pages

  • Chemical Reactions Lab

    Classifying Chemical Reactions Purpose: The purpose of this experiment is to observe a variety of chemical reactions and to identify patterns in the conversion of reactants into products. Apparatus: • Bunsen or lab burner -Test tube clamp • Butane safety lighter - Test tube rack • Evaporating dish - Wash bottle • Forceps or crucible tongs - Wood Splints • Heat resistant pad • Litmus paper • Pipets • Spatula • Test tubes Materials:  Ammonium carbonate,...

    Carbon dioxide, Chemical reaction, Chemistry 1135  Words | 5  Pages

  • Chemical Changes Lab Report

    Chemical Changes Date: 02/11/015 Pre Lab Questions: Use what you learned in this lab to answer the following questions. A. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). How would you test this material for the presence of sodium bicarbonate? I would add hydrochloric acid (HCl) with carbon dioxide with NaHCO3, and it should bubble and form gas. B. You know what color phenolphthalein and bromothymol blue turn when testing an acid or a...

    Acetic acid, Blue, Chemical reaction 792  Words | 4  Pages

  • The Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid

    The rate of reaction between sodium thiosulphate and hydrochloric acid Candidate name: Yeo Jin Kim (Kimberly Kim) Candidate number: 000791-021 Teacher: Yitao Duan 1.0 Aim The aim of this experiment is to investigate the changing of concentration effect the rate of reaction between sodium thiosulphate and hydrochloride. 2.1 Chemical Equation 2.0 Raw data 3.2 Qualitative Data 2.1.1 Before the experiment Substance | Color | State | Smell | Hydrochloride (HCl) | Colorless...

    Chemical reaction, Chemistry, Harshad number 1378  Words | 5  Pages

  • Reactions Of Acids

    E XPE RIME NT 4 . 5 Reactions of acids Aim To investigate and compare some reactions of a strong acid, hydrochloric acid, and a weak acid, ethanoic acid (common name, acetic acid) Equipment Dropper bottles containing: • 0.1 M hydrochloric acid, HCl • 0.1 M ethanoic acid (acetic acid), CH3COOH • 0.1 M sodium hydroxide, NaOH • 1 M hydrochloric acid, HCl • 1 M ethanoic acid (acetic acid), CH3COOH • universal indicator solution • limewater (calcium hydroxide, Ca(OH)2) Marble chips (calcium carbonate...

    Acetic acid, Acid dissociation constant, Base 1079  Words | 2  Pages

  • Rates of Reaction

    Rates of Reaction Coursework Aim: To find out how different concentrations of sodium thiosulphate (Na S2 O3) affects the speed of its reaction with Hydrochloric acid (HCL). Introduction When Sodium Thiosulphate and Hydrochloric acid react they produce a cloudy precipitate. Both of the chemicals are clear solutions and they react together to form a yellow precipitate of sulphur, the equation for this reaction is: Na2 S2 O3 + HCL, H2 O + NaCL + SO2 + S Sodium Thiosulphate + Hydrochloric...

    Chemical reaction, Chemistry, Chlorine 937  Words | 5  Pages

  • Irresistible Lab Report Chem 109

    resists changes in pH when H+, OH-, or H20 is added. By using standard lab equipment, a lab pro diagnostic tool, and acidic and basic solutions, the pH can be found. By recording the pH while adding a base or an acid gradually to a buffer solution you can find the capacity of each buffer to resist drastic changes in pH. The best buffers will keep a solution from becoming either too acidic or basic with the addition of a strong base or acid. Introduction The objective of the Irresistible lab is to...

    Acid, Acid dissociation constant, Base 1297  Words | 4  Pages

  • Enthalpy Lab Report

    Abstract This lab is performed in order to determine the total energy in a reaction between zinc and hydrochloric acid. The reaction is done twice, once to measure the heat of the reaction and again to determine the work done in the system. This is because Enthalpy equals heat plus work (∆H= ∆E+W). Heat and work can be broken down further into separate components so the equation used in lab is ∆H=mc∆T + PV. Many calculations are used in the lab to find out what cannot be measured directly (ex:...

    Chemical reaction, Energy, Enthalpy 1248  Words | 4  Pages

  • Lab Coat Assignment FC

    best fabric for science laboratory clothing. (Final Report) Abstract: This experiment looked at the effectiveness of cotton, wool and polyester to come up with a hypothesis to which material would be the best used in a lab coat. After the hypothesis was made an experiment was done on the 3 materials, to find out which material is the best to use in a lab coat. The results of the experiment were that wool was the best material to be used in a lab coat. Introduction: Scientists and students working...

    Acid, Base, PH 1714  Words | 7  Pages

  • Standardization of Sodium Hydroxide Solution

    Abstract. This report is about how to standardize a Sodium Hydroxide (NaOH) solution by titrating it with pure sample of Potassium acid Phthalate (KHC8H4O4). This experiment has two sections. The first section is to standardize the Sodium Hydroxide by titration. Three sample of 0.7 – 0.9 g of solid KHP are place into each of the three numbered Erlenmeyer flasks. 50 ml of distilled water are added to each three of it from graduated cylinder and constantly shake it until the KHP solution are completely...

    Acid, Base, Chemistry 1535  Words | 6  Pages

  • Enthalpy of Acid-Base Reaction

    Calorimeter and of the Enthalpy of an Acid-Base Reaction Abstract The purpose of this lab was to first, determine the specific heat capacity of a homemade calorimeter, and second, to calculate the enthalpy of reaction for an acid-base reaction between 6M KOH and 6M HNO3. To determine the specific heat capacity of the calorimeter, two differing temperatures of water were measured and volume was measured and mixed within the calorimeter. The enthalpy of reaction for an acid-base reaction was found by...

    Absolute zero, Acid, Calorimeter 1528  Words | 5  Pages

  • Acid-Base Lab

    Title: Acid-Base Titrations AP Chemistry Laboratory #6 II.Purpose: The purpose of this experiment is to standardize a sodium hydroxide solution and use the standard solution to titrate an unknown solid acid. The equivalent mass of the solid acid will be determined from the volume of sodium hydroxide added at the equivalence point. The equilibrium constant, Ks, of the solid acid will be calculated from the titration curve obtained by plotting the pH of the solution versus the volume of sodium hydroxide...

    Acid, Acid dissociation constant, Base 1339  Words | 4  Pages

  • Acids, Bases, and Buffers Lab

    Acids, Bases and Buffers Lab Acids, Bases and Buffers Lab Results: The experimental results for part one is as follows: Part One Data Table | Initial pH | Final pH | Test Tube A | 6 | 1 | Test Tube B | 4 | 4 | Test Tube C | 4 | ----- | Test Tube D | 4 | 4 | Test Tube E | 6 | 11 | The experimental results for part two is as follows: Part Two Data Table | Before CO2 was Added | After CO2 was Added | Colour | Blue/green | Light green/yellow | pH Level | 8.0pH | 5.0pH | ...

    Acid, Acid dissociation constant, Bicarbonate 998  Words | 3  Pages

  • Chem Lab 1 Report

    Date of Experiment: 6/9/15 Report Submitted: June 10, 2015 Title: Observations of Chemical and Physical Changes Purpose: the purpose of this lab experiment is that I will be able to decipher the difference between a chemical and physical change. I will be about to tell whether a chemical change has occurred during the experiment or if it was a physical change and I will be able to answer why it is either one. Procedure: In the lab experiment, I mixed different types of chemicals...

    Chemical reaction, Chemistry, Hydrochloric acid 1259  Words | 3  Pages

  • Lab Observations of Chemical Changes

    Observations of Chemical Changes Purpose: The purpose of this experiment is to observe chemical changes in common consumer products to determine if the chemicals are basic, acidic, or remain neutral when mixed with other chemicals. Procedure: In this experiment, various chemicals were mixed together, to determine a reaction. Using two drops from chemical 1 and two drops of chemical two, unless otherwise stated, then recording the type of physical reaction or color changes that occurred. Well#/questions...

    Acid, Base, Chemical reaction 812  Words | 4  Pages

  • Studying the pH of Strong Acid, Weak Acid, Salt, and Buffer Solutions

    Studying the pH of Strong Acid, Weak Acid, Salt, and Buffer Solutions The purpose of the current experiment was to determine the pH of various hydrochloric acid and acetic acid solutions, to determine the pH of various salt solutions, to prepare a buffer solution, and determine the effects of adding a strong acid and strong base to the buffer solution versus adding a strong acid and strong base to water. The measured pHs for the hydrochloric acid solutions were 1.6, 2.2, 2.9, and 3.8. The measured...

    Acetic acid, Acid, Acid dissociation constant 1669  Words | 4  Pages

  • Investigation into temperature change during neutralisation.

    is an experiment into temperature change in an exothermic reaction taking place between Sodium hydroxide (NaOH) and Hydrochloric acid (HCl) and also how the concentration of the acid will vary these results. The characteristics of the reaction feature a neutralisation, an energy change (shown as a temperature change) that is usually exothermic (gives out heat). The reaction of neutralisation is exothermic because of the bonds being broken and made in the reaction. When bonds are broken, energy in...

    Chemistry, Chlorine, Hydrochloric acid 722  Words | 4  Pages

  • Physical and Chemical Changes

    Title: Physical and Chemical Changes Purpose: Recognize and distinguish between chemical and physical changes Apparatus and Material: evaporating dish, Bunsen burner, wood splint, test tubes, micro spatula, dropper, mortar and pestle, test tube holder, safety goggles, lab apron. Piece of paper, NaCl (sodium chloride), water, 6 M HCL (hydrochloric acid), 0.1 M AgNO3 (silver nitrate), Mg ribbon, 6 M HCL (hydrochloric acid), CuSO4 5 H2O, 0.50g iron fillings, 0.50g of powdered sulfur, magnet,...

    Chemical reaction, Chemistry, Chlorine 1267  Words | 4  Pages

  • Lab Report Identifying Physical And Chemical

     Lab Report: Identifying Physical and Chemical Changes Nelson Science Perspectives 10 section 5.2 Amazing Student September 17, 2012 Mrs. Volkmann SNC 2D Purpose: To collect evidence and then use it to identify physical and chemical changes. Hypothesis: I predict the following: Change 1 will be a chemical change Change 2 will be a chemical change Change 3 will be a physical change Change 4 will be a chemical change Change 5 will be a chemical change Change 6 will be a physical...

    Chemical reaction, Chemistry, Chlorine 1071  Words | 5  Pages

  • chem 2 lab 0404

      1. The use of microscale techniques does not change the hazardous nature of the reagents we use. Briefly describe the hazards associated with even small amounts of each of the following:         a. concentrated hydrochloric acid, HCl         HCL may be corrosive. It can cause burns to dosy tissue and can be deadly if inhaled or swallowed. b. sodium hydroxide, NaOH, solution NaOH is a very corrosive chemical and contact with it can cause burns to body tissue and ...

    Base, Chemical reaction, Chemistry 761  Words | 2  Pages

  • Observations of Reactions of Copper

    Dominick Prince Partner: Ryan Potts Reactions of Copper Due: Monday January 14, 2013 Beginning of Class Block: 5 Purpose / Safety: Purpose: 1. Observe some chemical reaction of copper and its compounds. 2. Write word and formula equations to represent these reactions. Safety: 1. Wear goggles and a lab apron or coat. 2. Tie back long hair and secure loose clothing before working with an open flame. 3. Corrosive substance; avoid contact with skin, eyes, and clothing...

    Ammonia, Chlorine, Copper 581  Words | 3  Pages

  • Enthalpy Change of Cumbustion of Calcium Carbonates

    Cao  2.0 mol dm-3 hydrochloric acid  Scale  50cm3 measuring cylinder  Thermometer  Polystyrene cup  Weighing bottle Method I. I will weigh a weighing bottle containing 2.53g of calcium carbonate II. Using a measuring cylinder of 50cm3 I will measure 50cm3 of 2mol dm-3 of hydrochloric acid then pour it into a polystyrene cup III. I will measure the initial temperature of the acid using a measuring cylinder, and then I will add the calcium carbonate to the acid. I will carefully stir...

    Calcium carbonate, Calcium oxide, Carbon dioxide 563  Words | 3  Pages

  • Chem Lab

    Heats and Rates Summative Lab Purpose: The purpose is to determine the rate, rate law and order of reaction for sodium-carbonate and hydrochloric acid. Hypothesis: If we keep on diluting HCl, the concentration of the HCl will decrease, and then the rate of reaction will decrease as well. Pre-lab calculation: Na2CO3 + 2 HCl  2NaCl + H2O + CO2 Maximum amount of the solid C = n/v HCl maximum concentration is 1.6 M Total volume = 20ml (of acid) + 5ml (water) = 25ml= 0.025 L n= C (v) 1.6 mol/...

    Chlorine, Hydrochloric acid, Hydrogen 460  Words | 6  Pages

  • 17 Calcium Hydroxide Solubility JER 2

    calcium hydroxide solubility in water INTRODUCTION When an ionic solid is added to water the solid dissolves by dissociating into its component ions. As more and more solid is added, it will continue to dissolve until the solution becomes saturated with ions. At this point the solid is in equilibrium with its component ions in solution. This is called the solubility equilibrium and will persist as long as the temperature is constant. For example, the solubility equilibrium of calcium hydroxide in water...

    Calcium hydroxide, Chemical equilibrium, Entropy 814  Words | 3  Pages

  • Standardization of Sodium Hydroxide

    12-STANDARDIZATION OF SODIUM HYDROXIDE Standard solutions for titrations are especially pure mixtures with exactly known concentrations. Primary standards are very pure solids. They have the advantage that they can be weighed (the analytical balance is normally the most accurate instrument in the laboratory) and they are stable under laboratory conditions. In this experiment, the primary standard is oxalic acid dihydrate, H2C2O4 ( 2H2O. It will be used to standardize a solution of sodium hydroxide. ...

    Base, Chemistry, Erlenmeyer flask 1024  Words | 5  Pages

  • Lab Report Acid Base Titration

    CONCENTRATION OF SULPHURIC ACID BY TITRATION WITH A STANDARD SOLUTION OF SODIUM HYDROXIDE INTRODUCTION Reaction of acid and base is one of the most common reaction in chemistry. This reaction is also widely known as neutralization. In this experiment, we used titration technique which involves accurately measuring the volume of a solution required to react with another reagent. An indicator must be used to determine the end point of the titration. The indicator used can change colors at different pH...

    Acid, Base, PH 509  Words | 3  Pages

  • Standardization of Acid/Base

    STANDARDIATION OF ACID AND BASE Eunice Ivy B. Gamboa ABSTRACT Solutions of known concentration are prepared by dissolving measured masses of standard acids in distilled water. The concentrations of unknown solutions of sodium hydroxide are determined by titration. An acid solution reacts with a base solution in a "neutralization" reaction. Titrations permit the concentrations of unknown acids/bases to be determined with a high degree of accuracy. In order to analyze unknown acids/bases, we must have...

    Acid, Chemistry, Concentration 1558  Words | 6  Pages

  • Physical and Chemical Change Lab

    Patrick Kelly 10/16/12 Physical and Chemical Changes Lab Question: How do you distinguish a physical and chemical change? Hypothesis: If we use these materials and use magnets, water, burners, and filters on the mixtures and elements given we should determine what kind of effect these materials given will have on these mixtures and elements, physical or chemical. Procedures: -Part A: Record all observations of Part A in Data Table 1 1. Label each substance on seven pieces of paper...

    Carbon dioxide, Chemical reaction, Chemistry 1321  Words | 4  Pages

  • Lab Report

    Name: Friday Cleaners LABORATORY REPORT INTRODUCTION Litmus paper is an acidic based paper. And it is made up of paper and it obtains a proper pH reading. The p in pH stands for potential. The term is potential of hydrogen or pH, which simply means the potential of something attracting hydrogen ions to itself. PH also is referred to as acid/alkaline balance. Acid are liquids with acidic properties. The paper turns red in response to acidic conditions. Acid substances are also able to turn blue...

    Acid, Base, Hydrogen ion 1033  Words | 4  Pages

  • preparation of sodium chloride through titration

    Preparation of Sodium Chloride through titration Abstract: acid-base titration is a technique commonly used to determine the moles of acid in a sample by adding a known volume of strong base of a known concentration. The strong base provides the hydroxide ion, to react quantitatively with the acid. The point at which the acid is completely and exactly consumed the known quantity of base is called the equivalence end point and is signalled by a colour change in the solution (end point)...

    Acetic acid, Acetic anhydride, Aspirin 1296  Words | 6  Pages

  • Chem Lab Report

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