1. Physical Properties of Water and Ice 1. Molecular Weight: A. 18.01528 g/mol Water‚ Molar mass Triple Point The temperature and pressure at which solid‚ liquid‚ and gaseous water coexist in equilibrium is called the triple point of water. This point is used to define the units of temperature (the kelvin‚ the SI unit of thermodynamic temperature and‚ indirectly‚ the degree Celsius and even the degree Fahrenheit). As a consequence‚ water’s triple point temperature is a prescribed value rather
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experiment was to produce isopentyl acetate‚ banana oil. Acetic acid and isoamyl alcohol were used to synthesize isopentyl acetate. The techniques used for the separation and purification of isopentyl acetate were reflux‚ liquid-liquid extraction‚ neutralization and distillation. The identification of isopentyl acetate was based on boiling points and an infrared spectrum. This experiment resulted in a 11.68% yield. The reactants and products of this reaction are in equilibrium‚ and therefore it was difficult
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to 250.0 mL. A. 21.8 M B. 0.459 M C. 0.0872 M D. 11.5 M _____5. Which of the following compounds is a weak electrolyte? A. NH4Cl B. HF C. HCl D. KOH _____6. What is the chemical formula of the salt produced by the neutralization of nitric acid with Barium hydroxide? A. BaNO3 B. Ba2NO4 C. Ba2NO3 D. Ba(NO3)2 _____7. What is the oxidation number of N in NaNO2? A. -1 B. 3 C. -3 D. 4 _____8. Iron is more active than silver but less active than
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06.03 Calorimetry: Lab Report Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure: Part I: The Dissolving of Solid Sodium Hydroxide in Water Measure out approximately 205 mL of distilled water and pour it into the calorimeter. Stir carefully with a thermometer until a constant temperature is reached. Record the volume of water and the constant initial temperature of the water on your data table. Place
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CBSE-i CLASS XI UNIT-8 CHEMISTRY Thermodynamics Student’s Manual Shiksha Kendra‚ 2‚ Community Centre‚ Preet Vihar‚ Delhi-110 092 India CLASS CBSE-i XI UNIT-8 CHEMISTRY Thermodynamics Student’s Manual Shiksha Kendra‚ 2‚ Community Centre‚ Preet Vihar‚ Delhi-110 092 India The CBSE-International is grateful for permission to reproduce and/or translate copyright material used in this publication. The acknowledgements have been included wherever appropriate and sources from where the material
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University of Nebraska at Omaha Bomb Calorimetry Physical Chemistry 3354 Enthalpy of Combustion: 1‚2-diphenylethane January 6‚ 2014 Author: Jon D. Paul Signature Professor: Dr. Edmund Tisko Date Abstract Experimentation involving constant volume calorimetry produces the heat of reaction for many substances. When choosing adiabatic conditions we are allowed to focus on the reaction system while neglecting everything else. The reactions that are studied should proceed relatively
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The Dissolving of Solid Sodium Hydroxide in Water Procedure: 1. Measure out approximately 200 mL of distilled water and pour it into the calorimeter. Stir carefully with a thermometer until a constant temperature is reached. Record the volume of water and the constant initial temperature of the water on your data table. 2. Place a plastic measuring trough on top of the digital balance‚ and then zero the balance (press the tare button) so that the mass of the trough will be "ignored" and
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Greek metry meaning to measure‚ is the science of measuring the amount of heat‚ q.1 The amount of heat is absorbed (endothermic where qrxn >0) or released (exothermic where qrxn <0) by the system with respect to its surroundings is the change in enthalpy‚ ΔH. This is quantified in calorimetry by a device called calorimeter. There are two types of calorimeters. The first type is the called the bomb calorimeter. It is ideally suited for measuring the heat evolved in a combustion reaction. Because
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SYLLABUS CHEMISTRY (043) CLASS-XII – (2012-13) Annexure - ‘ I ’ S.No. 1. 2. 3. 4. Type of Question Long Answers (LA) Short Answers-II (SA II) Short Answers-I (SA-I) Very Short Answer (VSA) Total Marks for No. of Total Marks each Question Questions 5 3 2 1 3 9 10 08 30 15 27 20 08 70 Weightage 4 5 5 5 4 3 8 5 3 4 4 6 4 4 3 3 70 Total: S.No. UNIT 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Solid State Solutions Electrochemistry Chemical Kinetics Surface Chemistry General Principles
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neutralize it. The molar solubility of potassium hydrogen tartrate was calculated from the volume of sodium hydroxide used. The experimental result for the solubility at 298K was compared to literature data‚ to verify the reliability of this method. The experimental value is in agreement with the literature data. The values for the solubility product constant at each temperature were obtained from the respective molar solubilities‚ and fitted to the Van’t Hoff equation. The corresponding enthalpy change for
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