A white crystalline compound `(X)` swells open heating and gives violet-coloured flame. Its aqueous
Channel: Doubtnut
Date: 2020-07-26

A white crystalline compound `(X)` swells open heating and gives violet-coloured flame. Its aqueous solution gives the following reactions :  (a) A white precipitate is formed, with `BaCl_(2)` in presence of `HCl`.  (b) When treated with excess of `NH_(4) OH`, it gives white gelatinous precipitate. the white precipitate dissolves in `NaOH` and reappears on boiling with concentrated solution of `NH_(4) Cl`.  ( c) It gives yellow precipitate with cobaltinitrite solution. Identify `(X)` and explain the reaction at steps `a, b` and `c`.