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MHT CET Chemistry question

ChemistryElectrochemistryMHT CET

The standard reduction potential for Pb | Pb and Zn | Zn are -0.126 V and -0.763 V respectively. The e.m.f. of the cell Zn | Zn (1.0 M) || Pb (1.0 M) | Pb is

Answer: (A)

Solution

Zn is the anode and Pb the cathode, so E = E(cathode) - E(anode) = -0.126 - (-0.763) = +0.637 V; -0.673 V and -0.889 V are

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Question ID VK-066355