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Identify the correct statement from the ...

Identify the correct statement from the options given below for the galvanic cell :

A

Cathode in a voltaic cell loose weight during reaction

B

`Delta G` is positive for spontaneous cell reaction in voltaic cell

C

The voltaic cell is working in reverse direction if the e.m.f of a cell is negative

D

The cell reaction is spontaneous in galvanic cell if `E_("cell")` is less than external potential applied in cell

Text Solution

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The correct Answer is:
C

This option is correct statement if the emf. of a voltaic cell is negative, it means emf is positive for reverse reaction and reverse reaction is spontaneous, and cell is working in reverse direction.
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