80 (a) Calculate and AG at 298 K for the fuel-cell reaction. V KJ AG AH°: 2 H₂(g) + O₂(g) → 2 H₂O(1) K = 1.34 x 1083 (b) Predict the signs of AH and AS for the fuel-cell reaction. rum constant value for a hydrogen-oxygen fuel cell at 298 K is given below. O positive O negative AS°: Opositive O negative (c) As temperature increases, does the maximum amount of work obtained from the fuel-cell reaction increase, decrease, or remain the same? Explain. Since AS is ---Select--- B, as T increases, AG becomes more ---Select--- 8. Therefore, the maximum work obtained will ---Select--- Bas T increases.
80 (a) Calculate and AG at 298 K for the fuel-cell reaction. V KJ AG AH°: 2 H₂(g) + O₂(g) → 2 H₂O(1) K = 1.34 x 1083 (b) Predict the signs of AH and AS for the fuel-cell reaction. rum constant value for a hydrogen-oxygen fuel cell at 298 K is given below. O positive O negative AS°: Opositive O negative (c) As temperature increases, does the maximum amount of work obtained from the fuel-cell reaction increase, decrease, or remain the same? Explain. Since AS is ---Select--- B, as T increases, AG becomes more ---Select--- 8. Therefore, the maximum work obtained will ---Select--- Bas T increases.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 122AE: The overall reaction and equilibrium constant value for a hydrogen-oxygen fuel cell at 298 K is...
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![The overall reaction and equilibrium constant value for a hydrogen-oxygen fuel cell at 298 K is given below.
2 H₂(g) + O₂(g) → 2 H₂O(l)
K = 1.34 x 1083
(a) Calculate and AG at 298 K for the fuel-cell reaction.
V
k]
80
AGO
(b) Predict the signs of AH° and AS for the fuel-cell reaction.
AH°:
O positive.
O negative
AS°:
positive
O negative
(c) As temperature increases, does the maximum amount of work obtained from the fuel-cell reaction increase, decrease, or remain the same? Explain.
Since AS is ---Select---, as T increases, AG becomes more ---Select--- . Therefore, the maximum work obtained will ---Select---
as T increases.
ASK YOUR TEACH](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F743fb83c-b612-4cb6-a56e-64f0dd4a813c%2Fd480c7e0-175b-4d66-b6d7-f30a860479dc%2F5tqkwi_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The overall reaction and equilibrium constant value for a hydrogen-oxygen fuel cell at 298 K is given below.
2 H₂(g) + O₂(g) → 2 H₂O(l)
K = 1.34 x 1083
(a) Calculate and AG at 298 K for the fuel-cell reaction.
V
k]
80
AGO
(b) Predict the signs of AH° and AS for the fuel-cell reaction.
AH°:
O positive.
O negative
AS°:
positive
O negative
(c) As temperature increases, does the maximum amount of work obtained from the fuel-cell reaction increase, decrease, or remain the same? Explain.
Since AS is ---Select---, as T increases, AG becomes more ---Select--- . Therefore, the maximum work obtained will ---Select---
as T increases.
ASK YOUR TEACH
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