Consider a 70% efficient hydrogen-oxygen fuel cell working under standard conditions at 1 bar and 298 K.
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Question:
Consider a 70% efficient hydrogen-oxygen fuel cell working under standard conditions at 1 bar and 298 K. Its cell reaction is;
H2(g) + ½ O2(g) ? H2O(l)
The work derived from the cell on the consumption of 1.0 × 10-3 mol of H2(g) is used to compress 1.00 mol of a monoatomic ideal gas in a thermally insulated container. What is the change in the temperature (in K) of the ideal gas?
The standard reduction potentials for the two half-cells are given below.
O2(g) + 4H+(aq) + 4e– ? 2 H2O (l), Eo = 1.23 V
2H+(aq) + 2– ? H2(g), Eo = 0.00 V
Use F = 96500 C mol-1, R = 8.314 J mol-1 K-1
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