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`.

Explanation

To identify the compound (X) and explain the reactions at steps (a), (b), and (c), we can follow these steps:

### Step 1: Analyze the characteristics of compound (X)
- The compound is described as a white crystalline substance that swells upon heating and produces a violet-colored flame.
- The swelling upon heating indicates the presence of water molecules, suggesting that (X) is a hydrated salt.
- The violet flame indicates the presence of potassium ions (K⁺).

### Step 2: Identify the possible components of (X)
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