Homework Help is Here – Start Your Trial Now!
Science
Chemistry
(a) What is the maximum electrical work obtainable from the reaction | 0,(g) + H,(g) = H,O(1) %3D under standard conditions (25°C and 1 atm pressure and specified amounts of reactants)? (b) What is the heat transferred if this maximum work is obtained? The standard free energy change for the reaction, AG°, is -237.18 kJ mol-'. The standard enthalpy change, AH°, is -285.85 kJ mol.

(a) What is the maximum electrical work obtainable from the reaction | 0,(g) + H,(g) = H,O(1) %3D under standard conditions (25°C and 1 atm pressure and specified amounts of reactants)? (b) What is the heat transferred if this maximum work is obtained? The standard free energy change for the reaction, AG°, is -237.18 kJ mol-'. The standard enthalpy change, AH°, is -285.85 kJ mol.

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter12: Thermodynamic Processes And Thermochemistry
Section: Chapter Questions
Problem 84AP
See similar textbooks
icon
Related questions
Question
Example 2.2 (a) What is the maximum electrical work obtainable from the reaction | 02(g) + H,(g) H2O(1) %3D under standard conditions (25°C and 1 atm pressure and specified amounts of reactants)? (b) What is the heat transferred if this maximum work is obtained? The standard free energy change for the reaction, AG°, is -237.18 kJ mol. The standard enthalpy change, AH°, is -285.85 kJ mol. (a) According to equation 30, the maximum electrical work available under reversible conditions (i.e., when T A,S = 0) is w' = -. kJ mol'. (Two electrons are transferred per mole of the reaction. There- fore the standard potential difference for the electrochemical reaction is: -(-237,180) J/2 x 96,485 J/V = AG° = 237.18 1.23 V.) - 285.85 + 237.18 (b) The heat transferred is -48.67 kJ mol-1. The system releases heat to the surroundings, but much less than under irreversible conditions for this reaction. AH° + w' = (Note that here the system is the electrochemical reaction plus the external electric circuit required to reversibly extract the free energy released.)
Transcribed Image Text:Example 2.2 (a) What is the maximum electrical work obtainable from the reaction | 02(g) + H,(g) H2O(1) %3D under standard conditions (25°C and 1 atm pressure and specified amounts of reactants)? (b) What is the heat transferred if this maximum work is obtained? The standard free energy change for the reaction, AG°, is -237.18 kJ mol. The standard enthalpy change, AH°, is -285.85 kJ mol. (a) According to equation 30, the maximum electrical work available under reversible conditions (i.e., when T A,S = 0) is w' = -. kJ mol'. (Two electrons are transferred per mole of the reaction. There- fore the standard potential difference for the electrochemical reaction is: -(-237,180) J/2 x 96,485 J/V = AG° = 237.18 1.23 V.) - 285.85 + 237.18 (b) The heat transferred is -48.67 kJ mol-1. The system releases heat to the surroundings, but much less than under irreversible conditions for this reaction. AH° + w' = (Note that here the system is the electrochemical reaction plus the external electric circuit required to reversibly extract the free energy released.)
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Thermodynamics
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Principles of Modern Chemistry
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
Chemistry for Engineering Students
Chemistry for Engineering Students
Chemistry
ISBN:
9781337398909
Author:
Lawrence S. Brown, Tom Holme
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry: Principles and Practice
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS