Question

Group reagent for the precipitation of group II basic radicals for the qualitative analysis is :

• A. $dil.HCl+H_{2}S$
• B. $N{H}_{4}Cl\left(solid\right)+N{H}_{4}OH\left(solution\right)+H_{2}S$
• C. ${\left(N{H}_4\right)}_{2}C{O}_3$ solution
• D. none of the above

Answer 1

Answer: (A)

$dil.HCl+H_{2}S$

Option (A) is correct.
Group reagent for the precipitation of group II basic radicals for the qualitative analysis is $dil.HCl+H_{2}S$. In II group, sulphides are precipitated in acidic medium.