- 1(current)
Q. No.H2S gas when passed through a solution of cations containing HCl precipitates the cations of second group of qualitative analysis but not those belonging to the fourth group. It is because:
| 1. | Presence of HCl decreases the sulphide ion concentration |
| 2. | Sulphides of group IV cations are unstable in HCl |
| 3. | Solubility product of group II sulphides is more than that of group IV sulphides |
| 4. | Presence of HCl increases the sulphides ion concentration |
Subtopic: Â Common Ion Effect |
AIPMT - 2005
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