Redox Reactions And Electrochemistry Ques 608

Question: Mark the false statement-

Options:

A) A salt bridge is used to eliminate liquid junction potential

B) The Gibbs free energy change, $ \Delta G $ is related with electromotive force E as $ \Delta G=-nFE $

C) Nernst equation for single electrode potential is $ E=E{}^\circ -\frac{RT}{nF}log{a_{{M^{n+}}}} $

D) The efficiency of a hydrogen-oxygen fuel cell is 23%

Show Answer

Answer:

Correct Answer: C

Solution:

[c] Correct Nernst equation is $ E=E{}^\circ +\frac{2.303,RT}{nF}\log {a_{{M^{n+}}}}. $



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