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The pair(s) of ions where BOTH the ions ...

The pair(s) of ions where BOTH the ions are precipitated upon passing `H_(2)S` gas in presence of dilute HCl is (are)

A

`Ba^(2+), Zn^(2+)`

B

`Bi^(3+) , Fe^(3+)`

C

`Cu^(2+), Pb^(2+)`

D

`Hg^(2+), Bi^(3+)`

Text Solution

Verified by Experts

The correct Answer is:
C, D
`Cu^(2+), Pb^(2+), Hg^(2+) and Bi^(3+)` all lie in Group II of qualitative analysis and are precipitated from the solution on passing `H_(2)S` gas in the solution acidified with dilute HCl.
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