1.

Cell reactiomn is spontaneous whenA. `E_(red)^(@)` is negativeB. `E_(red)^(@)` is positiveC. `DeltaG^(@)` is negativeD. `DeltaG^(@)` is positive

Answer» Correct Answer - C
( c) When the value of `DeltaG^(@)` is negative, the cell reaction is spontaneous.
` DeltaG^(@)=-nFE^(@)`
where, n= number of electrons take part
F=Faraday constant
`E^(@)`=EMF of the cell
Thus, for a spontaneous reaction, the EMF of the cell must be positive.


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