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Q.

Which process occurs in the electrolysis of aqueous solution of nickel chloride at nickel anode?

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a

large N{i^{2 + }} + ,2e, to ,Ni

 

 

b

2{H^ + } + ,2e, to ,{H_2}

 

 

c

2C{l^ - }, to ,C{l_2}, + ,2e

 

 

d

Ni, to ,N{i^{2 + }}, + ,2e

 

 

answer is D.

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Detailed Solution

When same metal is used as  electrode the process is known as attackable electrode process. During this process anion of electrolyte continuously attacks

anode (metal).Anode itself undergoes oxidation.Hence at anode nickel undergoes oxidation.Ni - 2{e^ - } rightleftharpoons N{i^{ + 2}}

 

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Which process occurs in the electrolysis of aqueous solution of nickel chloride at nickel anode?