The standard electrode potential of the two half cells are given belowNi+2+2e-→Ni;E0=-0.25VoltZn+2+2e-→Zn;E0=-0.77voltThe voltage of cell formed by combining the two half cells would be
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a
– 1.02
b
+ 0.52 volt
c
+ 1.02 volt
d
– 0.52 volt
answer is B.
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Detailed Solution
Zn electrode is having lesser SRP and is anode.Ni electrode is having higher SRP and is cathodeEcell=Eco-Eao =-0.25-(-0.77)=+0.52