1.

The reversible efficiency of a fuel cell is given by _________________(a) \(\frac{∆G}{∆H} \)(b) \(\frac{∆H}{∆G} \)(c) \(1-\frac{T∆S}{∆G} \)(d) \(1-\frac{T∆G}{∆H} \)I got this question at a job interview.The above asked question is from Inorganic Chemical in division Inorganic Chemical Industries of Chemical Technology

Answer»

The correct option is (a) \(\FRAC{∆G}{∆H} \)

Best explanation: Efficiency of a fuel cell is CONVERSION of ∆H to ∆G(useful electrical energy), HENCE the IDEAL or REVERSIBLE efficiency is given by \(ƞ_r=\frac{∆G}{∆H}=1-\frac{T∆S}{∆H}.\)



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