reactants in the exothermic reactions had a greater amount of heat content than the products‚ and therefore producing a negative enthalpy. Activity B however created an endothermic reaction‚ absorbing heat from its surroundings‚ due to its lack of energy. Ammonium Chloride and Water had shown to have more products than reactants; and this consequently produced a positive enthalpy change. As Activity A and B produced exothermic reactions‚ they are most suitable for heat and eat packs. This is due to the
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BIRLA INSTITUTE OF TECHNOLOGY AND SCIENCE‚ PILANI INSTRUCTION DIVISION FIRST SEMESTER 2011‐2012 Course Handout (Part – II) Date: 02/08/2011 In addition to Part I (General handout for all course appended to timetable)‚ this portion gives further specific details regarding the course. Course No. : Course Title : Instructor‐in‐Charge : Team of Instructors : 1. 2. 3. 4. BITS F111 Thermodynamics M S Soni
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Ideal Verses Actual In Rankine-Cycle Rankine-cycle is a known mechanical-cycle which is being commonly used in the power plants for converting the pressure energy of steam into mechanical energy using steam turbines. Major components of it are rotating steam turbine and boiler pump and stationary condenser and boiler. Boiler is used for heating the water for generation of steam at required pressure and temperature as per the requirement of the turbine for power generation. Turbine exhaust is directed
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factor ‘ i ’ for a solute in a solvent account for? 3. What is a secondary cell? 4. By how many times does the t½ of zero order reaction increase if the initial concentration of the reactant is doubled? 5. Name the catalyst that catalyzes the decomposition of KClO3 into KCl and O2. 6. Give the composition of ‘copper matte’. 7. What is the structure of XeF2? 8. A racemic mixture is optically inactive. Why? 9. 10. + X. Give the IUPAC name of X. What does the primary structure specify about
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Flow Section 8.1‚ pages 216-219 2. Measurement of Heat Flow Section 8.2‚ pages 219-222 3. Enthalpy Section 8.3‚ pages 222-223 4. Thermochemical Equations Sections 8.4‚ pages 223-226 Written Assignment 1. Principles of Heat Flow Packet‚ page 3‚ questions 1-10 2. Phase Changes Packet‚ page 4‚ questions 1-14 3. Measurement of Heat Flow Page 241‚ exercises # 2‚ 4‚ 6 *4. Enthalpy and Heat of Formation Page 242‚ exercise # 16‚ 20‚ 34; packet‚ page 7‚ questions 1-6 ; page 8‚ questions
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Combustion of Alcohols Purpose: The purpose of this investigation is to use calorimetry to determine the molar enthalpy change in the combustion of each of a series of alcohols. Question: How do the enthalpies of combustion change as the alcohol molecules become larger? Prediction: I predict the bigger the molecule the more the energy will be released. Materials: On lab sheet Procedure: On lab sheet Observation: On other page Analysis: b) i) Ethanol – q=(100g)(4.18J/g/C)(25.5C) q=10659J
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16-1 Solutions Manual for Thermodynamics: An Engineering Approach Seventh Edition Yunus A. Cengel‚ Michael A. Boles McGraw-Hill‚ 2011 Chapter 16 CHEMICAL AND PHASE EQUILIBRIUM PROPRIETARY AND CONFIDENTIAL This Manual is the proprietary property of The McGraw-Hill Companies‚ Inc. (“McGraw-Hill”) and protected by copyright and other state and federal laws. By opening and using this Manual the user agrees to the following restrictions‚ and if the recipient does not agree to these restrictions‚ the
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Investigating the solubility of Group II hydroxides Jiyeon Kim Aim: To investigate the solubility of Group II hydroxides (Mg(OH)2‚ Ca(OH)2‚ Sr(OH)2‚ Ba(OH)2) Research Question: What is the trend of solubility of Group II hydroxides going down the group as determined through measuring the volume of hydroxides needed to titrate with a known concentration of hydrochloric acid? Background Information: Solubility is when a solute forms a homogeneous solution by dissolving in solvent. The solubility
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sheet. 8810-6105 13 pages © International Baccalaureate Organization 2010 0113 –2– N10/4/CHEMI/SP2/ENG/TZ0/XX SECTION A Answer all the questions in the spaces provided. 1. The data below are from an experiment to measure the enthalpy change for the reaction of aqueous copper(II) sulfate‚ CuSO4 (aq) and zinc‚ Zn (s). Cu 2+(aq ) + Zn (s) → Cu (s) + Zn 2+(aq ) 50.0 cm3 of 1.00 mol dm–3 copper(II) sulfate solution was placed in a polystyrene cup and zinc powder was added after
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2O2(g ) ¡ CO2(g ) ϩ 2H2O(l ) ⌬H ϭ Ϫ890 kJ Burning 1 mol of methane releases 890 kJ of heat. The heat of combustion (⌬H) for this reaction is Ϫ890 kJ per mole of carbon burned. Like other heats of reaction‚ heats of combustion are reported as the enthalpy changes when the reactions are carried out at 101.3 kPa of pressure and the reactants and products are in their physical states at 25°C. Figure 17.8 The combustion of natural gas is an exothermic reaction. As bonds in methane (the main component
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