1.

How many of the following pairs of ions can be separated by H_2S in dilute HCl ? Bi^(3+) and Sn^(4+),Al^(3+) and Hg^(2+),Cd^(2+) and Zn^(2+),Fe^(3+) and Cu^(2+), As^(3+) and Sb^(3+)

Answer»


Solution :(1)`Al^(3+) and HG^(2+) underset(H_2S)overset(H^(+))to HgSdarr(black)+Al^(3+)`(in solution)
(2)`CD^(2+) and Zn^(2+) underset(H_2S)overset(H^(+))to CdSdarr(YELLOW)+Zn^(2+)`(in solution)
(3)`Fe^(3+) and Cu^(2+) underset(H_2S)overset(H^(+))to CuSdarr(black)+Fe^(3+)`(in solution)


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