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A solution containing one mole per litre...

A solution containing one mole per litre of each `Cu(NO_(3))_(2), AgNO_(3), Hg_(2)(NO_(3))_(2)` and `Mg(NO_(3))_(2)` is being electrolysed by using electrode potential in volts ( reduction potentials) are `Ag^(+)"|"Ag = + 0.80, Hg_(2)^(2+)"|" Hg = 0.79`.
`Cu^(2+) "|" Cu=0.34" and "Mg^(2+)"|"Mg= - 2.37` V.
With increasing voltage, the sequence of deposition of metal on the cathode will be

A

Ag, Hg, Cu, Mg

B

Mg, Cu, Hg, Ag

C

Ag, Hg, Cu

D

Cu, Hg, Ag

Text Solution

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The correct Answer is:
C
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