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The EMF of a chemical cell is positive w...

The EMF of a chemical cell is positive when free energy change of reaction

A

`gt0`

B

`lt0`

C

`=0`

D

no relationship of free energy chagne and e.m.f.

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaG=-nFE^(@)`.
If Emf is positive (spontaenous reaction)
so `DeltaG=-ve` i.e. less than zero.
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