Questions

# Which of the following statements is/are incorrect?

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By Expert Faculty of Sri Chaitanya
a
Electrical work done in one second is equal to electrical potential multiplied by total charge passed
b
Charge has to be passed reversibly in order to obtain the maximum work from Galvanic cell
c
The reversible work done by Galvanic cell is equal to decrease in its Gibbs energy
d
ΔG=−nEcell
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detailed solution

Correct option is A

The standard free energy (∆Go) is related to standard electrode potential (Eo ) and equilibrium constant as            ΔG∘=−nFE∘    and    ΔG∘=−RTloge⁡Keq     Thus,if Ecell ∘ is − ve,then ΔG∘ is + ve,i.e., ΔG∘>0. Hence, Keq would be negative and less than 1, Keq<1.

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