Write down the observation for the following: Hydrogen sulphide gas, is passed through aqueous copper sulphate solution.

Explanation

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants in this reaction are hydrogen sulfide gas (H₂S) and aqueous copper sulfate solution (CuSO₄).

2. **Write the Chemical Reaction**:
- When hydrogen sulfide gas is passed through copper sulfate solution, the reaction can be represented as:
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