The ion that cannot be precipitated by both HCl and `H_2 S` is

Options

A. `Pb^(2+)`
B. `Cu^+`
C. `Ag^+`
D. `Sn^(2+)`

Answer

D

Explanation

(A)(B)(C )can be precipitated by HCl as well as `H_2S` as their insoluble chlorides and sulphides respectively.
(D)`Sn^(2+)+2HCl toSnCl_2`(soluble)+`2H^+` . It can be precipitated only by `H_2S` as its insoluble sulphide (brown).