Question

0.5 M HCl solution has ions- Hg++, Cd++, Sr++,
Fe++, Cu++. To pass the H,S gas in this solution,
which are precipitated out :-
(1) Cd+2, Fe+2, Sr+2 (2) Cd+2, Hg+2, Cu+2
(3) Hg+2, Cu+2, Fe+2 (4) Cu+2, Sr+2, Fe+2​

Answer 1

Answer:

option 2 is correct.

0.5 M HCl solution has ions- Hg++, Cd++, Sr++,  Fe++, Cu++. To pass the H,S gas in this solution,  then the precipitated out is Cd+2,Hg+2,Cu+2