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Chemistry
The efficiency of a fuel cell is given by
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Q. The efficiency of a fuel cell is given by
AIPMT
AIPMT 2007
Electrochemistry
A
$\Delta G/\Delta S $
20%
B
$\Delta G/\Delta H $
52%
C
$\Delta S/\Delta G $
8%
D
$\Delta H/\Delta G $
20%
Solution:
Efficiency of a fuel cell $(\phi)= \frac {\Delta G}{\Delta H}\times 100 $
Fuel cells are expected to have an efficiency of $100 \% .$