Question:
When H₂S gas is passed through the HCl containing aqueous solution of CuCl₂, HgCl₂, BiCl₃ and CoCl₂, it does not precipitate out
When H₂S gas is passed through the HCl containing aqueous solution of CuCl₂, HgCl₂, BiCl₃ and CoCl₂, it does not precipitate out
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H₂S in acidic medium precipitates only group II cations.
Updated On: Mar 18, 2026
- CuS
- HgS
- Bi₂S₃
- CoS
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The Correct Option is D
Solution and Explanation
Step 1: In acidic medium, only group II sulphides precipitate.
Step 2: CoS belongs to group IV and does not precipitate.
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