Cell reaction is spontaneous when:

Options

A. `DeltaG^(@)` is positive
B. `DeltaG^(@)` is positive
C. `DeltaE_("Red")^(@)` is positive
D. `Delta_("red")^(@)` is negative

Answer

A

Explanation

For a cell reaction to be spontaneous `DeltaG^(@)` should be negative. As `DeltaG^(@) = -nFE^(@)`, So the value will be negative only when `E^(@)` is positive, n=number of electrons involved, F = Value of Faraday.