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(a) (i) What are the thermodynamic quantities of a system that affect the amount and sign of the internal energy change of a system? (ii) Consider the process represented by the following chemical equation: H2O(I) NH4NO3(s) NH4*(aq) + NO, (aq) AH = +28.05 kJ/mol Using correct thermodynamic terminology, explain the sign of ATsurroundings for this process. (b) Study the following thermochemical data very carefully: AH° = 242.3 kJ Cl2(g) 12(g) ICI(g) I2(s) 2CI(g) 21(g) I(g) + CI(g) I2(g) AH° = 151.0 kJ AH° = 211.3 kJ AH° = 62.8 kJ I2(s) reacts with Cl2(g) to produce ICI(g). Write the chemical equation to produce ONLY one mole of ICI(g) (i) Calculate AH° for the reaction of I2(s) with Cl2(g) to form 1 mole of ICI(g). Use all the data given above. (ii) What law did you use to calculate AH° above? (iii) What are the names of the following processes? 12(s) I2(g) I2(g) 21(g) ICI(g) |(g) + CI(g)

(a) (i) What are the thermodynamic quantities of a system that affect the amount and sign of the internal energy change of a system? (ii) Consider the process represented by the following chemical equation: H2O(I) NH4NO3(s) NH4*(aq) + NO, (aq) AH = +28.05 kJ/mol Using correct thermodynamic terminology, explain the sign of ATsurroundings for this process. (b) Study the following thermochemical data very carefully: AH° = 242.3 kJ Cl2(g) 12(g) ICI(g) I2(s) 2CI(g) 21(g) I(g) + CI(g) I2(g) AH° = 151.0 kJ AH° = 211.3 kJ AH° = 62.8 kJ I2(s) reacts with Cl2(g) to produce ICI(g). Write the chemical equation to produce ONLY one mole of ICI(g) (i) Calculate AH° for the reaction of I2(s) with Cl2(g) to form 1 mole of ICI(g). Use all the data given above. (ii) What law did you use to calculate AH° above? (iii) What are the names of the following processes? 12(s) I2(g) I2(g) 21(g) ICI(g) |(g) + CI(g)

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter12: Chemical Equilibrium
Section: Chapter Questions
Problem 85QRT
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(a) (i) What are the thermodynamic quantities of a system that affect the amount and sign of the internal energy change of a system? (ii) Consider the process represented by the following chemical equation: H2O(I) NH4NO3(s) NH4*(aq) + NO, (aq) AH = +28.05 kJ/mol Using correct thermodynamic terminology, explain the sign of ATsurroundings for this process. (b) Study the following thermochemical data very carefully: AH° = 242.3 kJ Cl2(g) 12(g) ICI(g) I2(s) 2CI(g) 21(g) I(g) + CI(g) I2(g) AH° = 151.0 kJ AH° = 211.3 kJ AH° = 62.8 kJ I2(s) reacts with Cl2(g) to produce ICI(g). Write the chemical equation to produce ONLY one mole of ICI(g) (i) Calculate AH° for the reaction of I2(s) with Cl2(g) to form 1 mole of ICI(g). Use all the data given above. (ii) What law did you use to calculate AH° above? (iii) What are the names of the following processes? 12(s) I2(g) I2(g) 21(g) ICI(g) |(g) + CI(g)
Transcribed Image Text:(a) (i) What are the thermodynamic quantities of a system that affect the amount and sign of the internal energy change of a system? (ii) Consider the process represented by the following chemical equation: H2O(I) NH4NO3(s) NH4*(aq) + NO, (aq) AH = +28.05 kJ/mol Using correct thermodynamic terminology, explain the sign of ATsurroundings for this process. (b) Study the following thermochemical data very carefully: AH° = 242.3 kJ Cl2(g) 12(g) ICI(g) I2(s) 2CI(g) 21(g) I(g) + CI(g) I2(g) AH° = 151.0 kJ AH° = 211.3 kJ AH° = 62.8 kJ I2(s) reacts with Cl2(g) to produce ICI(g). Write the chemical equation to produce ONLY one mole of ICI(g) (i) Calculate AH° for the reaction of I2(s) with Cl2(g) to form 1 mole of ICI(g). Use all the data given above. (ii) What law did you use to calculate AH° above? (iii) What are the names of the following processes? 12(s) I2(g) I2(g) 21(g) ICI(g) |(g) + CI(g)
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