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A light green coloured salt soluble in w...

A light green coloured salt soluble in water gives black percipitate on passing `H_(2)S` which dissolves readily in HCl. The metal ion present is :

A

`Co^(2+)`

B

`Zn^(2+)`

C

`Ni^(2+)`

D

`Mn^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
C
`Ni^(2+) + H_(2)S rarr underset(("Black ppt"))(NiS) overset(2HCl)rarr underset(("Soluble"))(NiCl_(2)) + H_(2)S`
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