• Thermal Decomposition of Sodium Hydrogen Carbonate
    Chemistry Write-Up The Thermal Decomposition of Sodium Hydrogen Carbonate Aim: When Sodium Hydrogen Carbonate (NaHCO3) is heated, Carbon dioxide and water are given off to leave a white powder. The aim is to find the equations for this reaction. Hypothesis: The experiment will prove which...
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  • Evaluating an Enthalpy Change That Cannot Be Measured Directly.
    Evaluating An Enthalpy Change That Cannot Be Measured Directly. Dr. Watson. Introduction. We were told that sodium hydrogencarbonate decomposes on heating to give sodium carbonate, water and carbon dioxide as shown in the equation below:- 2NaHCO3(s)--------> Na2CO3 (s) + H2O (l) + CO2 (g)...
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  • Enthalpy Change of Cumbustion of Calcium Carbonates
    Plan Equipment  2.54g of Caco3  2.53g of 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 cylin...
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  • Determinaing Enthalpy Change of Potassium
    Determining the enthalpy change for the thermal decomposition of potassium hydrogen carbonate into potassium carbonate. Controlled Variables: 1. Volume of HCl ± 0.5 cm3 (± 2%) 2. Concentration of HCl, 3. Same mass of K2CO3 and KHCO3 within specified ranges of 2.5 – 3.0g and 3.25 â...
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  • The Enthalpy of Formation of Magnesium Carbonate
    The Enthalpy of Formation of Magnesium Carbonate By: Jessica Miller T.A: Thomas Lab Partner: Rebekah Melanson Thursday Lab Room 106 Chemistry 1001-A Due Date: Thursday February 3rd 2011 Abstract The purpose of this experiment was to determine the enthalpy of formation of magnesium c...
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  • Determination of the Enthalpy for Decomposition of Hydrogen Peroxide
    Determination of the Enthalpy for Decomposition of Hydrogen Peroxide Objective: To construct a coffee cup calorimeter, measure its calorimeter constant, and determine the enthalpy of decomposition and formation of hydrogen peroxide. Background: This experiment is a classic thermodynamics lab. In it,...
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  • 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) ZnSO...
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  • Calculation on the Molar Enthalpy Change of a Neutralization Reaction
    Calculation on the 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 calculate...
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  • Ibdp Chemistry Ia Enthalpy Change of Neutralisation
    Aim: To calculate the enthalpy change of neutralization of the given pairs of acid and base. Theory: When 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. Ionic equ...
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  • Determination of Enthalpy Change of Neutralization
    CHEMISTRY 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 w...
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  • Enthalpy change of reaction
    Introduction: Thermochemistry is the branch of chemistry that studies the energy and heat associated 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...
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  • 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 c...
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  • Acetate Sodium
     acetate de sodium step 1Preparation We'll be making approximately 330 mL (or 11 fl oz) of supersaturated solution. You will need the following items: - One 16 oz box of baking soda (sodium bicarbonate) - One gallon jug of distilled white vinegar (acetic acid) - Clean pot for b...
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  • Observation of a Chemical Change
    Observation of Chemical Change Marilyn Fulmore Principle of Chemistry I 1211-K Dr. May September 10, 2012 Abstract: In a chemical change where there is a chemical reaction, a new substance is formed. Chemical changes are based upon molecules and when two or more interact, it creates a new mo...
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  • Chemical Change and Observation Lab
    Lab Report 2 Observations of Chemical Changes Objectives: (1 of 20 points) The objectives of this experiment are: 1. To observe some properties of chemical reactions 2. To associate chemical properties with household products Background Information: (2 of 20 points) Chemical cha...
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  • Obs of Chemical Change
    Experiment ObservatiOns Of ChemiCal Changes Observations of Chemical Changes Peter Jeschofnig, Ph.D. Version 42-0182-00-01 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...
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  • 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 mate...
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  • The Determination of Carbonate and Bicarbonate in a Mixture
    Experiment # 3a Title: The Determination of Carbonate and Bicarbonate in a Mixture Date of Experiment: September 28, 2012 Aim: To determine the concentration of HCl and to determine the percent composition of sodium carbonate, sodium bicarbonate and inert material in a mixture. Abstract: Thre sa...
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  • Chemical Change
    Chemical Change Lab Name Data Table 1: |Chemicals |Well # |Reaction on White Paper |Reaction on Dark Paper | |NaHCO3 + HCl |A6 |Rem...
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  • Observations of Chemical Change
    Name: Jeanne Yoo|Date: 07/15/13| Exp 1: Observations of Chemical Changes|Lab Section: 1411-76426| Data Tables: Part 1: |Chemicals|Well No.|Observations of the Reaction| A.|NaHCO3 + HCl|1 |clear bubbles formed| B.|HCl + BTB|2 |turned orange after BTB was added, transparent, acidic| C.|NH3 +...
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