E° = E°c - E°a
= (-0.25) - (-0.76)
= 0.51 V
Using Nernst equation
E = E° - (0.0591/n)×log([Zn2+]/[Ni2+])
E = 0.51 - (0.0591/2)log(0.885/0.0190)
= 0.461 V
=
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