1.

A light greenish coloured salt was soluble in water. On passing H_2 S into the solution, a black ppt. was obtained which dissolved readily in HCl. The metal ion present is

Answer»

`Co^(2+)`
`Fe^(2+)`
`Ni^(2+)`
`Mn^(2+)`

SOLUTION :`Fe^(2+)+H_(2)S to underset("Black PPT.")(FeS darr) +2H^(+)`
`FeS(s)+2HCl(aq) to FeCl_(2)(aq)+H_(2)S(g)`


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