How will you separate the constituents from a mixture of H_(2)S and SO

1.	How will you separate the constituents from a mixture of H_(2)S and SO_(2) ?
Answer» SOLUTION :In order to separate the CONSITUENTS, pass the gaseous mixture through alkaline solution of ferrous sulphate. As a result, a black PRECIPITATE of ferrous sulphide is formed due to `H_(2)S` taking part in the REACTION. `FeSO_(4)+H_(2)S rarr underset("(Black ppt.)")(FeS)+H_(2)SO_(4)` `SO_(2)` will not react and will escape from the solution in pure form. In order to regenerate `H_(2)S`, treat the black precipitate with dilute `HCl`. `FeS(s)+2HCl (dil) rarr FeCl_(2)(aq)+H_(2)S(g)`

Discussion