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1. The reaction ½ 0zc@) + Hzc@) → H20a) is used in fuel cells to produce an electrical current. The reaction can also be carried out by direct combustion. Thermodynamic data: molar entropies in J mol-! K-': Oz1) 205.0; H29130.6; H2O, 70.0; H2O(!) AH®¡= -285.9 kJ mol-. Use this information to find a) The amount of heat released when the reaction takes place by direct combustion; b) The amount of electrical work the same reaction can perform when carried out in a fuel cell at 298K under reversible conditions; CI The amount of heat released under the same conditions.

1. The reaction ½ 0zc@) + Hzc@) → H20a) is used in fuel cells to produce an electrical current. The reaction can also be carried out by direct combustion. Thermodynamic data: molar entropies in J mol-! K-': Oz1) 205.0; H29130.6; H2O, 70.0; H2O(!) AH®¡= -285.9 kJ mol-. Use this information to find a) The amount of heat released when the reaction takes place by direct combustion; b) The amount of electrical work the same reaction can perform when carried out in a fuel cell at 298K under reversible conditions; CI The amount of heat released under the same conditions.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Directions: Solve and answer the activity on a separate sheet and your observations on the diagrams presented. ACTIVITY 1: Feel the Energy: In this activity answer some following problems and show your solution. (On a Piece of Paper) 1. The reaction ½ Oz(9) + H2(9) → H,0@ is used in fuel cells to produce an electrical current. The reaction can also be carried out by direct combustion. Thermodynamic data: molar entropies in J mol-1 K-': Oz19) 205.0; H219130.6; H2O, 70.0; H2O(1) AH°¡ = -285.9 kJ mol-1. Use this information to find a) The amount of heat released when the reaction takes place by direct combustion; b) The amount of electrical work the same reaction can perform when carried out in a fuel cell at 298K under reversible conditions; c) The amount of heat released under the same conditions. 2. Find the standard Gibbs energy change for the reaction CaCO3 → CaO, + CO2« The AG° values for the three components of this reaction system are CaCO3(s): -1128 kJ mol-!, CaO(s): -603.5 kJ mol-!, CO2(g): –137.2 kJ mol-1.
Transcribed Image Text:Directions: Solve and answer the activity on a separate sheet and your observations on the diagrams presented. ACTIVITY 1: Feel the Energy: In this activity answer some following problems and show your solution. (On a Piece of Paper) 1. The reaction ½ Oz(9) + H2(9) → H,0@ is used in fuel cells to produce an electrical current. The reaction can also be carried out by direct combustion. Thermodynamic data: molar entropies in J mol-1 K-': Oz19) 205.0; H219130.6; H2O, 70.0; H2O(1) AH°¡ = -285.9 kJ mol-1. Use this information to find a) The amount of heat released when the reaction takes place by direct combustion; b) The amount of electrical work the same reaction can perform when carried out in a fuel cell at 298K under reversible conditions; c) The amount of heat released under the same conditions. 2. Find the standard Gibbs energy change for the reaction CaCO3 → CaO, + CO2« The AG° values for the three components of this reaction system are CaCO3(s): -1128 kJ mol-!, CaO(s): -603.5 kJ mol-!, CO2(g): –137.2 kJ mol-1.
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