What happens when ammonium sulphide solution reacts with a solution containing a `Cr(III)` salt?

Explanation

To understand what happens when ammonium sulfide solution reacts with a solution containing Cr(III) salt, we can break down the reaction step by step.

### Step-by-Step Solution:

1. **Identify the Reactants**:
- Ammonium sulfide solution (NH₄)₂S contains sulfide ions (S²⁻).
- Chromium(III) salt, which can be represented as Cr³⁺.

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