Question

Which of the following ions will give black ppt. with `H_2S` in an acidic solution ?
A. `Cu^(2+)`
B. `Sn^(2+)`
C. `Pb^(2+)`
D. `Zn^(2+)`

Answer 1

Correct Answer - B::C
`Cu^(2+) and Pb^(2+)` give black ppt. with `H_2S` in acidic medium