When $\mathrm{H}{}_2\mathrm{S}$ is passed through a solution of $\mathrm{CuSO}{}_4$ acidified with dilute $\mathrm{HCl}$, the precipitate formed is

More questions on Group I and group II cations (Pb, Cu, Bi, Cd, As, Sb, Sn)

• Dilute HCl is added to a cold solution of Pb(NO3)2. The precipitate formed is NEET level
• A yellow precipitate is obtained when H2S is passed into a dilute-HCl solution of a salt. The cation present is NEET level
• When a few drops of NH3 solution are added to Cu^2+ solution, a pale blue precipitate forms; with excess NH3 it dissolves to give a deep blu... NEET level
• On pouring a clear solution of BiCl3 in dilute HCl into a large volume of water, a white turbidity appears. It is due to NEET level
• Among the sulphides CuS, CdS, PbS and As2S3, the one that dissolves in yellow ammonium sulphide is NEET level
• A yellow precipitate is formed when K2CrO4 is added to an acetic acid solution of a cation. The precipitate is insoluble in dilute acetic ac... JEE Main level