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The standard reduction potentials of Cu^...

The standard reduction potentials of `Cu^(=2),Ag^(+),Hg^(+2)` and `Mg^(+2)` are `0.34v,+0.80v,+0.79V` and `-2.37V` respectively. With increasing voltage, the squence of deposition of metals on the cathode from a molten mixture containing all those ions is

A

Ag, Hg, Mg, Cu

B

Cu, Hg, Ag, Mg

C

Ag, Hg, Cu, Mg

D

Cu, Hg, Mg, Ag

Text Solution

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The correct Answer is:
B
Metal ions with higher S.R.P discharged first.
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