A cell is prepared by dipping a chromium rod in 1M Cr2(SO4)3 solution and an iron rod in 1M FeSO4 solution. The standard reduction potentials of Chromium and Iron electrodes are -0.75 V and -0.45 V respectively. What will be the standard EMF of the cell?

The standard EMF of the cell,

Ecell = Ecathode – Eanode


Ecell = -0.45 – (-0.75) = 0.75-0.45 = +0.30 V.

Asked on June 11, 2016 in Chemistry.
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