ElectrochemistryHard

Question

Any redox reaction would occur spontaneously, if :

Options

A.the free energy change (ᐃG) is negative

B.the ᐃG^o is positive

C.the cell e.m.f. (E^o) is negative

D.the cell e.m.f. is positive.

Solution

ᐃG^o = - nFE^o_cell
If E^o_cell = +ve then ᐃG^o = -ve and reaction is spontaneous.

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