Mark the false statement

[MP PET 1997]

A salt bridge is used to eliminate liquid junction potential

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The Gibbs free energy change,

is related with electromotive force (E) , as

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Nernst equation for single electrode potential is

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The efficiency of a hydrogen oxygen fuel cell is 23%

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Solution

The correct option is D The efficiency of a hydrogen oxygen fuel cell is 23%
Practically only 60-70% efficiency has been attained.

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