Chlorine Essays & Research Papers

Best Chlorine Essays

  • Chlorine - 1858 Words
    Chlorine Zachary Grindle Chemistry 1301 Professor Bott June 24, 2010 Chlorine has an atomic mass of 35.453, atomic number 17, is a member of the halogen family (VIIA), and its symbol is “Cl”. Chlorine contains 17 protons and 18 neutrons in is nucleus. There are two isotopes for chlorine as well; Cl-35 and Cl-37. Chlorine was discovered in 1774 by Swedish chemist Carl Wilhelm Sheele. Sheele came upon chlorine when he put a few drops of hydrochloric acid (HCl), then known as muriatic...
    1,858 Words | 7 Pages
  • Chlorine Lab - 672 Words
    Determination of the concentration of chlorine ions Aim: To compare the concentration of chloride ions in pool and tap water respectively. Background: Tap water contains a variety of dissolved ions such as Ca2+, Mg2+, Na+, HCO3- and Cl-. In this experiment we will determine the concentration of the Cl- ions, and comparing it to the concentration found in a sample of pool water. The method used is the standard one for determining the concentration of chloride ions: titration...
    672 Words | 3 Pages
  • The Element: Chlorine - 1193 Words
    The Element: Chlorine General Information We researched the chemical element known as chlorine. Chlorine has an atomic number of 17 and an atomic weight of 35.453. It has a valence number of 3. The element has 3 energy levels. Chlorine exists as a greenish-yellow gas at normal temperatures and pressures. Chlorine is second in reactivity only to fluorine among the halogen elements. Chlorine is a nonmetal. It is estimated that 0.045% of the earth's crust and 1.9% of sea water are chlorine....
    1,193 Words | 4 Pages
  • Chlorine and Mark - 5436 Words
    Chemistry : Important Questions For CBSE Class XII ( Haloalkanes and Haloarenes) (Q.1) Choose the incorrect statement about the benzyl chloride: ( 1 mark ) (a) It is less reactive than alkyl halides. (b) It can be oxidized to benzaldehyde by boiling with copper nitrate solution. (c) It is a lachrymatory liquid and answers beilstein’s test. (d) It gives a white precipitate with alcoholic silver nitrate (Q.2) Dry ether The reaction RX + 2Na + RX _______________? R-R + 2NaXis called. ( 1...
    5,436 Words | 25 Pages
  • All Chlorine Essays

  • Chlorine and Mole Ratios - 251 Words
    ractice Problem #1: Oxygen gas can be produced by decomposing potassium chlorate using the reaction below. If 138.6 g of KClO3 is heated and decomposes completely, what mass of oxygen gas is produced? KClO3 (s) --> KCl (s) + O2 (g) [unbalanced] Answer to Practice Problem #1: 1. Balance your equation first. 2KClO3 (s) --> 2KCl (s) + 3O2 (g) [balanced] 2. Convert from grams to moles using molar mass....
    251 Words | 2 Pages
  • Chlorine and Cu Zn - 404 Words
    1 a) Which element on the table i) is an alkali metal? Li, Na, K ii) can be cut with a knife? K, Na, Li b) Arrange the elements Li, Na and K in terms i) Hardness starting from the softest. K, Na, Li ii) Melting point starting from the least K, Na, Li iii) Density starting from the least. K, Na, Li iv) Reactivity starting from the least reactive. Li, Na, K c) A piece of sodium was dropped in a trough containing...
    404 Words | 2 Pages
  • Chlorine and Starch Ts Assay
     QUALITY CONTROL LABORATORY Mam Dawn Assay of HCL Aqueous Alkalimetry Direct titration 0.1N NaOH Methyl Red TS HCL + NaOH NaCl + H2O Assay of Diluted H3PO4 Aqueous Alkalimetry Direct titration 0.1N NaOH Thymolphthalein TS H3PO4 + 2NaOH Na2HPO4 + 2H2O Assay of H3BO3 Aqueous Alkalimetry Direct titration 0.1N NaOH Phenolphthalein TS H3BO3...
    498 Words | 6 Pages
  • Chlorine and Magnesium Lab Introduction
    iLab, Week # 3 ATOMIC WEIGHT OF MAGNESIUM LAB Introduction The purpose of this lab experiment is to determine the atomic weight of magnesium by measuring the amount of hydrogen gas evolved when hydrochloric acid reacts with magnesium. The reaction is as followed: Mg + 2HCL  H2 + Mg2+(aq) + 2Cl-(aq) In this experiment there is a one to one relationship between the number of moles of hydrogen gas evolved and the moles of magnesium metal consumed in the reaction. Therefore in the finding...
    286 Words | 2 Pages
  • Magnesium: Chlorine and Hydrogen Moles
    ATOMIC WEIGHT OF MAGNESIUM LAB Introduction The main purpose for this experimental lab is to determine the atomic weight of magnesium, as well as an underlying purpose in determining the relationship between moles evolved and consumed. This can be demonstrated by measuring the hydrogen gas evolved by performing a chemical experiment when hydrochloric acid reacts with the magnesium. The formulated reaction includes; Mg + 2HCl → H2 + Mg2+(aq) + 2Cl- (aq) The major findings...
    370 Words | 2 Pages
  • Chlorine and Potassium Hydroxide Solution
    1. A 15,67g sample of hydrate of magnesium carbonate was carefully heated, without decomposing the carbonate, to drive off the water. The mass was reduced to 7.58g.What is the formula of the hydrate? (10) 2. Construct balanced equations (including state symbols) to describe the following reaction: Potassium metal reacts with water to form potassium hydroxide solution and hydrogen gas (dihydrogen). (8) 3. Anhydrous lithium perchlorate (4.78g) was dissolved in water and recrystallized. Care was...
    302 Words | 1 Page
  • Chlorine Free Bleach - 356 Words
    BLEACH WHAT IS BLEACH? It is a chemical used to remove or lighten colours. Bleaching uses oxidation to remove/lighten the colour Bleaching may be a preliminary step in dyeing COMMON BLEACH CHEMICALS: – Sodium hypochlorite – Chlorine bleach – Oxygen bleach (which contains hydrogen peroxide or peroxide-releasing compound such as sodium perborate or sodium percarbonate. – Bleaching powder (is calcium hypochlorite TYPES OF BLEACH: – Household bleach...
    356 Words | 4 Pages
  • Bleach: Chlorine and Pure White Newspaper
    PPT1 Good morning, everyone. Today I am going to talk about bleaching in lives. PPT 2 Here is what we are going to talk about in the next 5 minutes. How do manufacturers bleach something into light colors? How do things in white are easily to get yellow? Why do they do so? The reason of getting yellow. The solution to the problem. Difference between sulfide bleach and chlorine bleach. PPT 3 We heard words such as “bleach for unbleachables” from TV commercials. But what...
    488 Words | 2 Pages
  • Salt Water Pool Systems vs. Liquid Chlorine Pool Systems
    1 October 2010 Salt Water Pool Systems vs. Liquid Chlorine Pool Systems I currently utilize a salt water pool system called an Aqua Rite System. If you're in the market for a pool, it can be a bit overwhelming to choose a type of system that is right for you. The salt water pool vs. chlorine pool battle has been raging over the last decade, and today, many home owners are building these systems right from the start or converting their old chlorine pools into a salt pool. But what is the...
    886 Words | 2 Pages
  • Analisis of Human Exposure to Chloroform in a Hot Tub
    Abstract Hot tubs are very popular across America due to their relaxation as well as health benefits. Hot tubs have been attributed health benefits ranging from relief of muscle and joint pain, to help in treatment of HIV and other viral infections. Because of this, many people own hot tubs and many more go to health spas where they can use them. On the other hand, hot tubs are not that easy to maintain. A consistent disinfectant level must be maintained in order to inhibit the growth...
    4,916 Words | 16 Pages
  • Experiment 15 Qualitative Anion Tests
     Purpose: The purpose of this experiment is to identify some commonly occurring anions & to study some of the reactions used for their identification. Materials: 1 Household Bleach, 2 mL 1 Distilled water 1 Toothpicks 2 Beaker, 50 mL, plastic 1 Cylinder-25-mL 1 Pencil, marking 1 Test Tube (5), 13 x 100 mm in Bubble Bag 1 Well-Plate-24 1 Ammonium Molybdate, 0.2 M - 2 mL in Pipet 1 Aqueous Ammonia, 6 M, NH4OH - 4 mL in Pipet 1 Barium Chloride, 0.3 M - 2 mL in Pipet 1 Hydrochloric Acid, 6 M -...
    1,372 Words | 7 Pages
  • Which Gas, Ammonia or Hydrogen Chloride, Diffuses Faster?
    Name: Derell Ruan Form: 4B1 SBA: Chemistry Aim: To determine which gas, Ammonia or hydrogen chloride defuses faster. Hypothesis: Ammonia will defuse faster than hydrogen chloride. Materials Equipment: Chemicals: * 2 retort clamp and stand Ammonia * 1 ½ m glass tube * 2 250cm3 beakers * Cotton Wool * Stop clock *...
    404 Words | 2 Pages
  • Diffusion of Hydrochloric Acid Into Different Sizes of Agar Blocks
    Diffusion of Hydrochloric Acid into Different Sizes of Agar Blocks Aim: Investigating the relationship between the diffusion and the surface area to volume ratio, with agar and hydrochloric acid. Research Question: How does the difference in surface area to volume ratio affect the diffusion? Hypothesis: As the area to volume ratio increases, the time taken for a complete diffusion will also increase. Background Information: Agar is a jelly like substance and in this experiment,...
    476 Words | 2 Pages
  • research paper - 4158 Words
    Physical and Chemical Properties Peter Jeschofnig, Ph.D. Version 42-0188-00-01 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...
    4,158 Words | 18 Pages
  • Measuring Reaction Rate Using Volume of Gas Produced
    Chemistry 12 Formal Report Measuring Reaction Rate using Volume of Gas Produced By John Doe 23th October 2012 Introduction An essential element of chemistry is finding reaction rates. This is because chemists need to know how long a reaction should take. In addition to needing to know the rate of a reaction at any point in time to monitor how the reaction is proceeding. Many factors effect reaction rates, two shown above include temperature and concentration. Concentration affects...
    1,629 Words | 5 Pages
  • Chemistry Past Paper - 3681 Words
    Section A (Answer ALL questions in this Section.) 1. Rubidium (Rb) and potassium belong to the same group in the Periodic Table. The relative atomic mass of rubidium is larger than that of potassium. (a) Explain whether rubidium is more reactive than potassium. (b) Write a chemical equation for the reaction between rubidium and water. (State symbols should be given.) (c) Suggest how rubidium can be stored safely in the laboratory. (d) Suggest ONE safety precaution for...
    3,681 Words | 20 Pages
  • Red Cabbage Indicator - 454 Words
    bbagePreparing and testing a natural indicators AIM: To prepare and testing a natural indicator and applying information about the color changes of indicators to classify and find trends of house hold substance as acidic, neutral or basic. Materials: * Distilled water * 250ml beaker X2 * Test tube X9 * Tripod * Wire Gauze * Bunsen burner * Safety goggles Test Object: * Hydrochloric acid (HCl) * Sodium hydroxide (NaOH) * White Vinegar *...
    454 Words | 3 Pages
  • Neutralization Experiment - 1382 Words
    Neutralization experiment AIM:- To investigate how heat is given out in neutralizing sodium hydroxide (NaOH) using different concentrations of Hydrochloric Acid. Background Information:- Substances that neutralize acids are called alkalis. An acid is a substance that forms hydrogen ions (H+ ) when placed in water. It can also be described as a proton donor as it provides H+ ions. An example of an acid is hydrochloric acid (HCl), Sulphuric acid (H2SO4) etc. An alkali is...
    1,382 Words | 6 Pages
  • 50e5c6cce4b058681f3f0b47 Cher121 135724 - 358 Words
    Name: Charity Flosser Date: 12.17.2012 Unit: Lesson: Unit 4 Lesson 11 Classifying Reactions Objectives: Identify the four most common types of reactions: synthesis, decomposition, single replacement, double replacement Predict the products of reactions Balance chemical equations Part I: Reaction between zinc and iodine Watch the Video. http://www.youtube.com/watch?v=xT9V7Y1iKYc Observations: Describe what happened when the water was added. A...
    358 Words | 3 Pages
  • Final Lab Report Sample
    Date Performed: July 30, 2012 EXPERIMENT NO. 10 COMPOSITION OF POTASSIUM CHLORIDE ABSTRACT The aim of the experiment was to look for the percentage composition of the elements present in the decomposition of potassium chlorate (KClO3) and to find out what the residue after heating was. After performing the experiment the researchers found out that there were about 66.14% of potassium chloride (KCl) in KClO3, and they also deducted that the residue was actually KCl....
    1,199 Words | 4 Pages
  • The Alkaline Earths and the Halogens-Two Families in the Periodic Table
    Experimental Procedure I. Relative Solubilities of Some Salts of the Alkaline Earths 1. To each of four small test tubes add about 1 mL (about 12 drops) of 1 M Na2SO4. 2. Then add 1 mL of 0.1 M solutions of the nitrate salts of barium, calcium, magnesium, and strontium to those test tubes, one solution to a tube. 3. Stir each mixture using a stirring rod. The stirring rod should be rinsed in a beaker of deionized water between uses. 4. Record results in the data table, noting whether a...
    559 Words | 2 Pages
  • Chem Lab - 460 Words
    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...
    460 Words | 6 Pages
  • Acid-Base Extraction with Separatory Funnel
    A. Title – Acid-Base Extraction with Separatory Funnel B. Introduction – The main objective of the experiment was the extract an acid, a base, and a neutral compound from a 2:1:1 compound of benzoic acid, p-nitroaniline, and azobenzene. In theory, an extraction technique based on phase distribution should allow two immiscible solvents to separate with a portion of the solute distributed into each. Using a separatory funnel, acids were extracted with bases (NaOH), and bases were extracted...
    732 Words | 4 Pages
  • What Is Hairspray Made Of
    What is hairspray made of? Hairspray is a solution of long, chainlike molecules (called polymers) in a very volatile solvent. Spraying deposits a stiff layer of the polymer on your hair after the solvent evaporates. The solvent used was once a compound of carbon, fluorine, and chlorine (a chlorofluorocarbon, or CFC). CFCs are nontoxic, nonflammable, and make almost ideal aerosol propellants. But when it was learned that they causedestruction of stratospheric ozone, they were replaced with...
    1,592 Words | 6 Pages
  • Zinc and Hydrochloric Acid - 448 Words
    Zinc and Hydrochloric-Acid Written By Kahlil Zione Date:02/02/05 Abstract: We observed the reaction between zinc and hydrochloric acid and recorded it in a table and learned wether the percentage of zinc is effected by the amounts of both substances added to the solution. Introduction The purpose of this experiment is to determine if the amount of zinc and hydrochloric acid will effect the percentage of the zinc in the out coming solution. We are reacting zinc metal with...
    448 Words | 2 Pages
  • Observations of Chemical Changes - 308 Words
    Observation of Chemical Reactions Objective: This experiment is meant to show how certain chemicals react with each other and can be identified by these reactions Procedure: Several different chemical mixtures were poured into the well plate and observed. These included sodium bicarbonate and hydrochloric acid, bromothymol blue and hydrochloric acid, ammonia and bromothymol blue, hydrochloric acid and blue dye, blue dye and sodium hypochlorite, potassium iodide and lead nitrate, sodium...
    308 Words | 1 Page
  • Bleach - 517 Words
    What’s in a “Chemical”? Jordan Butt and Alexandra Porter Bleach Table of Contents HOUSEHOLD CHEMICAL – Bleach * Page 4 : Product Use * Page 5 : Chemical Ingredients * Page 6 : Associated Symbols * Page 7 : Suggested Precautions * Page 8 : Possible Health Effects * Page 9 : Possible Environmental Effects * Page 10 : Disposal recommendations CHEMICAL COMPOUND – Sodium Hypochlorite * Page 12 : The Basics * Page 13 : Chemical Properties * Page 14 : Physical...
    517 Words | 5 Pages
  • Textile Processing - 1524 Words
    SRI BHAVANI TEXTILE PROCESSING: The plant performs the following operations of wet processing 1. Singeing(Fabric) -Gas Singeing 2. Desizing 3. Mercerisation(Fabric) 4. Scouring and Bleaching 5. Dyeing -Kier boiler -Jigger -Jet dyeing -Beam dyeing 6. Dyeing(yarn) -Cheese dyeing 7. Finishing -Stenter -Zero-Zero -Calendering 8. Printing -Flat bed printing 9. Dot coating DESIZING: Mts=1095 Volume=650 Indent type=non organic Temp=80 Weight=378...
    1,524 Words | 10 Pages
  • The effect of 2KClO3 and H20 - 256 Words
     The Effect of 2KCLO3 and MnO2 on H2O Tinee’sha Coleman Mr. Messengers May 3, 2014 Chemistry Period 3 Background information In the experiment we find the volume of gas produced from a known mass of solid which we are studying in class about Stoichometry and how you solve mass-volume in a equation. Keywords Theoretical volume Experimental volume Stoichiometry Balanced equation Safety tips Make sure goggles are on at all times during the experiment. If you have long...
    256 Words | 2 Pages
  • Haloform Reaction - 379 Words
    Discussion The reaction through which 4-mrthaoxyacetophenone is converted to 4-methoxybenzoic acid is a haloform reaction. This reaction involves two distinct stages that occur in the same environment. The first stage occurs through the based-catalyzed halogenation of the ketone that forms a trihalo ketone. First, the bleach is transformed into chlorine and hydroxide ions through the following reaction: Then, the hydroxyl is able to attack the rather acidic (pKa ~ 20) α-hydrogen of the...
    379 Words | 2 Pages
  • Lab of peridoic table of elements
    Keith Fleming 9/30/14 Families of Elements Pre-lab I. Purpose- The purpose of this lab is to identify elements and observe similarities shared between them. II. Safety- In this lab the needed safety materials required are safety goggles and apron. Also its suggested to wash hands after dealing with any of the chemicals. some chemicals with safety hazards we will be working with are Sodium chloride with is slightly toxic if ingested. Sodium Bromide which is slightly toxic if inhaled or...
    404 Words | 2 Pages
  • How Fast Is Your Reaction
    How fast is your reaction? Part 1 – How temperature affect the rate of reaction Chemical equation Magnesium + hydrochloric acid → magnesium chloride + hydrogen Mg + 2HCL → MgCl2 + H2 Graph Conclusion and questions 1. What factors/variables did you keep the same in this experiment? * We kept the same volume of hydrochloric acid (10 cm3) and the magnesium ribbon (5cm) because that way we could get a fair test experiment. We also...
    1,994 Words | 8 Pages
  • Effects Of PH On The Function Of Enzyme
     Effects of pH on the Function of Enzymes Rena Mototani Glen Rock High School Advanced Biology 2014-2015 Effects of pH on the Function of Catalase Rena Mototani Problem: How does the pH of a cell affect the function of the enzyme catalase? Introduction In this lab, we experimented the effects of pH on the function of the enzyme catalase. Catalase is an enzyme that brings about the reaction by which hydrogen peroxide is decomposed to water and oxygen (Encyclopedia...
    1,489 Words | 6 Pages
  • Lab Report: Physical and Chemical Changes
    Purpose: To investigate the difference between physical and chemical changes in matter. Materials: Safety glasses 13 small test tubes Test tube rack Test tube holder 2 100-mL beakers Funnel Watch glass Stirring rod Evaporating dish Magnet Magnifying glass Crucible tongs Spatula Balance Meeker burner Ring stand Iron ring Wire gauze Forceps Sulfur Iron filings Sodium Bicarbonate Sodium Chloride Sugar Sand Magnesium ribbon Hydrochloric Acid Distilled water Filter...
    575 Words | 5 Pages
  • Chemiluminescence - 1441 Words
    General Chemistry Laboratory 151 Chemiluminescence Introduction: The objective of tis experiment was to carry out systematic series of experiments in order to determine which chemicals and which ratios of chemicals produce the brightest light. Also, this experiment will determine which chemical produces the longest light. Chemiluminescence is the emission of light (luminescence), as the result of a chemical reaction. There may also be limited emission of heat. This occurs because...
    1,441 Words | 5 Pages
  • Chem Lab Report - 1164 Words
    Synthesis Procedure 1 -1.0 Introduction A Cobalt-Amine-Halide compound is synthesized from cobalt (II) chloride hexahydrate. An orange-tinted solid is produced and is considered to be unknown since the specific ligand amounts are unknown. By determining the percent composition of various elements and compounds in the unknown, its true identity can be predicted. Chloride, ammonia, and cobalt are three examples of percent compositions determined to help narrow the selection of possible...
    1,164 Words | 6 Pages
  • Chemistry in Our Life - 3269 Words
    |Top of Form |[pic][pic][pic][pic][pic][pic][pic][pic] | |Throughout our lives, chemistry plays a key role in keeping us healthy. Today we’re living | | |healthier and longer lives—more than 30 years longer over the past century—thanks in large part | | |to innovations made possible by the business of...
    3,269 Words | 17 Pages
  • Chemistry Life in Daily Life
    Assignment # 1 Chemistry Submitted to: dr. shamshad Submitted by: sheeraz ahmed Rg# 10-nust-be-me-83 Date: 11/4/2011 Table of Context * Introduction * Daily Life Applications * Fluorine * Introduction * Properties And Uses Of Fluorine * Fluoridation Of Water * Chlorofluorocarbons * Chlorine * Introduction * Uses Of Chlorine * Chlorine And Organic Compounds * Bromine * Introduction * Halogen Lamps * Iodine * Introduction * Uses And...
    2,966 Words | 9 Pages
  • Alkaline Earths - 816 Words
    The Alkaline Earths and the Halogens-Two Families in the Periodic Table Objective: The purpose of this experiment is to study the properties of the elements in two families in the Periodic Table, the Alkaline Earths and the Halogens. I will also mix solutions of halogens and halide ions to determine the relative oxidizing strengths of the halogens. Introduction: The alkaline Earths are all reactive metals and include barium, beryllium, calcium, magnesium, radium, and strontium. The...
    816 Words | 5 Pages
  • Effects of Chlorinated Drinking Water
    Chlorine is added to drinking water, as a disinfectant, to get rid of harmful bacteria, which are usually present in areas from where the water is obtained. The controversy of this issue is that chlorination can work as an advantage or as a disadvantage to those consuming it. Chlorine is currently the most effective water treatment when compared with other alternatives. However, it also reacts with natural organic compounds present in the water to produce harmful chemicals that on a long-term...
    764 Words | 2 Pages
  • Mesopotamians and Egyptians religious significant similarities and differences
    (A) Name of product : Cascade Dishwasher Cleaner (B) Link to MSDS sheet : http://www.easternct.edu/ehs/msdspdf/Cascade_dishwasher_detergent.pdf (C) Hazardous ingredients: Complex Sodium Phosphates and sodium carbonate, Nonionic surfactant and chlorine bleach, sodium silicate, sodium sulfate. (D) What do these ingredients do in the mixture? When tested as a whole can be considered an eye irritant. Complex Sodium Phosphates and sodium carbonate are used as a water softener. Nonionic...
    512 Words | 2 Pages
  • Chemistry Exam paper 2
    w w ap eP m e tr .X w om .c s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *2339708426* 0620/02 CHEMISTRY May/June 2007 Paper 2 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials required. READ THESE INSTRUCTIONS FIRST Write your centre number, Candidate number and name in the spaces at the top of this page. Write in dark blue or black pen. You may...
    1,921 Words | 45 Pages
  • Oxidation - 603 Words
     YOUR NAME: Erin Alston, Kennedy Stuart, Amber Lamb and Stephonya Williams EXPERIMENT TITLE: Oxidation: Cyclohexanone from Cyclohexanol by Hypochlorite Oxidation and Adipic Acid from Cyclohexanone DATE: 4/18/2014 INTRODUCTION: In experiment 4, alcohol is oxidized to a ketone with household bleach. The product is then isolated by steam distillation and is extracted into the distillate with ether. After the removal of ether, it leaves the product cyclohexanone. In experiment 6, cyclohexanone...
    603 Words | 3 Pages
  • Dynamic Equilibrium and Le Chatelier’s Principle
    Experiment No. 2: Dynamic Equilibrium and Le Chatelier’s Principle December 1, 2011 Final Formal Results Le Chatelier’s Principle states that “when a stress is applied to a chemical system at equilibrium, the equilibrium shifts in a direction that reduces the effect of stress” (Gross, Abenojar, and Tan 23). Moreover, it helps us “predict the direction of the shift of the equilibrium” (Silberberg 745). Silberberg also stated that there are three kinds of disturbances - concentration,...
    2,463 Words | 9 Pages
  • Composition of Potassium Chlorate - 1531 Words
    EXPERIMENT 9 Composition Potassium of Chlorate IUA-,TERIAL S AND E QUI PME NT Solids: Reagent Grade potassium chlorate (KC1O3)and potassium chloride (KCl). Solutions: dilute (6 M) nitric acid (HNO3) and 0.1M silvernitrate (AgNO3). Th.o No.0 crucibles with covers; Ceramfab pad. DISCUSSION The percentage composition of a compound is the percentage by mass of each element in the compound. If the formula of a compound is known, the percentage composition can be calculated from the molar mass and...
    1,531 Words | 8 Pages
  • To Kill a Mockingbird - 318 Words
    Rachel Rodriguez Anthony Chirumbolo December 8, 2011 Chemistry I, Pd 11, Station K Evidence of Chemical Change Purpose To observe several chemical changes (reactions) and the evidence they exhibit for chemical change. Data See page 3 Analysis The two terms that describe possible energy change in a chemical reaction are Exothermic, for example when a gas is formed when Copper II Chloride and Aluminum are mixed, and Endothermic, for example when copper II Hydroxide is...
    318 Words | 2 Pages
  • chemistry paper - 2539 Words
    Name: __________________________________ ( ) Class: 4Q HWA CHONG INSTITUTION PRELIMINARY EXAMINATION 2010 CHEMISTRY 5072 Paper 1 Time: 1 hour INSTRUCTIONS TO CANDIDATES Do not turn the pages over until you are told to do so. Write your name and index number on the answer sheet in the spaces provided. There are forty questions on this paper. Attempt all questions. For each question, there are four possible answers labelled A, B, C and D. Choose the one you consider correct...
    2,539 Words | 48 Pages
  • Disinfection of Water - 702 Words
    Robert Hardt Instructor Mark Schmidt Surface Water Supply/Treatment March 14, 2013 Disinfection The main objective for the disinfection process raw water undergoes in our treatment facilities, rather the only purpose for disinfection is to kill any and all remaining viruses and harmful pathogens that would otherwise threaten the safety of those to consume it. Even after the turbidity has been reduced down to very nearly an ntu level of zero and the water is aesthetically...
    702 Words | 3 Pages
  • Basic Laboratory Operations and Identification of a compound
    Discussion for Experiment 1 (Basic Laboratory Operations and Identification of a compound : Chemical Properties) In the first experiment, the precision of instrument was studied by measuring the mass of water for several times. The result shows that the mass measurement of the balance is precise since the masses of water in six trials are somewhat close. The reason that the masses of water in each trial are not identical may come from the high sensitivity of the balance that keep fluctuating...
    671 Words | 2 Pages
  • CHEMISTRY - 5330 Words
    Keghan Chapter 8 MULTIPLE CHOICE QUESTIONS Topic: Structure Elucidation 1. An alkene adds hydrogen in the presence of a catalyst to give 3,4-dimethylhexane. Ozonolysis of the alkene followed by treatment with zinc and acetic acid gives a single organic product. The structure of the alkene is: CH3 A) CH3CH=C-CHCH2CH3 (cis or trans) CH3 CH3 B) CH3CH2C=CCH3 (cis or trans) CH2CH3 C) CH3 CH2=CCH2CHCH2CH3 CH3 CH2 D) CH3CH2CCHCH2CH3 CH3 CH3 E)...
    5,330 Words | 73 Pages
  • chemistry in daily life - 1873 Words
    II PUC – CHEMISTRY (34) MODEL QUESTION PAPER - 1 Time: 3hours 15 minutes Maximum marks: 70 Instructions: 1. The question paper has four parts: A, B, C and D. All parts are compulsory. 2. Write balanced chemical equations and draw labeled diagrams wherever required. 3. Use log tables and the simple calculator if necessary. (Use of scientific calculators is not allowed) PART-A I. Answer ALL of the following. (Each question carries 1 mark) 10x1=10 (Answer each question in one word...
    1,873 Words | 22 Pages
  • LESSON 7 THE MOLE CONCEPT
    THE MOLE CONCEPT References : Mohammed and Lambert ( Old Edition) Chapter 11 pg. 107 Mohammed and Lambert ( New edition) Chapter 8 pg 123 Anne Tindale Chapter 10 pg 46 The following topics will be covered : 1. Definition of Relative Atomic and Relative Molecular Masses. 2. Calculation of Relative Molecular Masses 3. Converting Moles to Grams / Grams to Moles 4. Calculation from equations Masses of substances /Volumes of gases /...
    1,800 Words | 17 Pages
  • Science fair - 172176 Words
    First, prepare a data table. Record what you see throughout the laboratory activity. Your teacher will demonstrate for the class the reaction of metallic copper with concentrated nitric acid, HNO3. This must be done in the fume hood. (Caution: Avoid breathing poisonous gases. Avoid contact of skin with nitric acid. It burns skin and clothing.) One student will be asked to feel the side of the demonstration beaker and report to the group. The products formed are copper(II) nitrate solution,...
    172,176 Words | 513 Pages
  • LAB 20C - 561 Words
     Feb. 19, 2015 Liangting Lin 1-4 Lab Partner: Sunny Zhao 20C: Acid-Base Titration Purpose/Objective: 1. To titrate a hydrochloric acid solution of unknown concentration with 0.50M sodium hydroxide, and determine the molarity of the hydrochloric acid 2. To titrate an acetic acid solution with 0.50M sodium hydroxide, and determine the molarity and percentage composition of the vinegar....
    561 Words | 3 Pages
  • Essay - 11539 Words
    SCIENCE 41 SCIENCE Rationale With the rapid advancement of science and technology the knowledge in this area has become extremely important. People need to be made scientifically literate to understand and benefit from the fast changes that are taking place in the world of science and technology. Science in classes IX and X therefore, should cater to equip the students with the knowledge that will help them pursue higher studies in the field of science. For those who do not want to...
    11,539 Words | 42 Pages
  • Chemical Reactions of Copper Compounds
    Chemical Reaction of copper compounds Introduction: In this experiment, the objective was to conduct a series of chemical reactions that contain copper or copper compounds. That is to say that the products of each chemical reaction were used in the next reaction. The process starts with a solid copper wire dissolved in nitric acid and the end product is copper powder. The product which was used from the previous reaction is the limiting. In the initial step, the solid copper is the limiting...
    795 Words | 3 Pages
  • Japan Soda Industry Association
    9/30/13 Japan Soda Industry Association Hom e > De scription of the soda industry > Production proce ss Production process of caustic soda and chlorine by electrolysis The processing of brine electrolysis to produce caustic soda, chlorine, and hydrogen is called the electrolytic (chloralkali) process. This is further classified into the membrane, diaphragm, and mercury processes. As of October 1999, all Japanese chloralkali plants use the membrane process. Salt is first dissolved...
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  • Final Chemistry Lab Report
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