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Which one of the following metals can no...

Which one of the following metals can not be obtained on electrolysis of aqueous solution of its salts?

A

`Ag`

B

`Mg`

C

`Cu`

D

`Cr`

Text Solution

Verified by Experts

The correct Answer is:
B
The reduction potential of Mgis less than that of water `(E^(o)=-0.83V)`. Hence their ions in the aqueous solution cannot be reduced instead water will be reduced.
`2H_(2)O+2e^(-)toH_(2)+2OH^(-)`.
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