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Question

Eo of an electrode half reaction is related to ΔGo by the equation, Eo=ΔGo/nF. If the amount of Ag+ in the half reaction Ag++eAg is tripled then:

A
n is tripled
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B
ΔGo increases to three times
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C
Eo reduces to one third
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D
All the above
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Solution

The correct option is D All the above
If Ag+ is tripled, so Ag and electron will also be tripled as per stoichiometry of the reaction.
Now, ΔE=ΔGηF
Since n=3,ΔE=ΔGηFΔG=3ΔEF
So, ΔE is reduced to one-third.

But, ΔG increases to 3 time.

Therefore, correct option is D.

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