H_(2)S gas when passed through a solution of cations containing HCl pr – InterviewSolution

1.	H_(2)S 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 because :
Answer» Sulphides of GROUP IV cations are unstable in HCI Presence of HCI decreases sulphide ION CONCENTRATION SOLUBILITY product of group II sulphides is more than that of group IV sulphides. Presence of HCI increases sulphide ion concentration. Answer :B

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