The emf of the cell, [ for volt

CHEMISTRY · Single correct · A Level · Chemistry · Electrode potentials · Electrode potentials

Problem

The emf of the cell,

Ni | Ni^{2+} (1.0 \text{ M}) || Ag^+ (1.0 \text{ M}) | Ag

[

E^\circ

for

Ni^{2+} / Ni = -0.25

volt,

E^\circ

for

Ag^+ / Ag = 0.80

volt] is given by : (a)

-0.25 + 0.80 = 0.55

volt (b)

-0.25 - (+0.80) = -1.05

volt (c)

+0.80 - (-0.25) = +1.05

volt (d)

-0.80 - (-0.25) = -0.55

volt