A hydrogen fuel cell consumes pure hydrogen at the anode side at 80 kPa and uses air at 1 bar as the oxygen source in the cathode side. This fuel cell operates at 30 oC. Assuming no side reactions due to the existence of nitrogen in the cathode, calculate the following: a) What is the overall reaction? How is the overall reaction it different from hydrogen combustion? b) Determine the standard cell potential, Eocell c) Determine the actual cell potential, Ecell d) What can you say about the spontaneity of the actual fuel cell reaction at low temperatures? Will spontaneity decrease or increase at lower temperatures?
A hydrogen fuel cell consumes pure hydrogen at the anode side at 80 kPa and uses air at 1 bar as the oxygen source in the cathode side. This fuel cell operates at 30 oC. Assuming no side reactions due to the existence of nitrogen in the cathode, calculate the following: a) What is the overall reaction? How is the overall reaction it different from hydrogen combustion? b) Determine the standard cell potential, Eocell c) Determine the actual cell potential, Ecell d) What can you say about the spontaneity of the actual fuel cell reaction at low temperatures? Will spontaneity decrease or increase at lower temperatures?
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
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A hydrogen fuel cell consumes pure hydrogen at the anode side at 80 kPa and uses air at 1 bar as the oxygen source in the cathode side. This fuel cell operates at 30 oC. Assuming no side reactions due to the existence of nitrogen in the cathode, calculate the following:
a) What is the overall reaction? How is the overall reaction it different from hydrogen combustion?
b) Determine the standard cell potential, Eocell
c) Determine the actual cell potential, Ecell
d) What can you say about the spontaneity of the actual fuel cell reaction at low temperatures? Will spontaneity decrease or increase at lower temperatures?
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