JEE Advance - Chemistry (2015 - Paper 2 Offline - No. 16)
The pairs of ions where BOTH the ions are precipitated upon passing H2S gas in presence of dilute HCl, is(are)
Ba2+, Zn2+
Bi3+, Fe3+
Cu2+, Pb2+
Hg2+, Bi3+
Explanation
The pairs Cu2+, Pb2+ and Hg2+, Bi3+ are precipitated as sulphides upon passing H2S in acidic medium.
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