Write one chemical equation to show that chlorine gas can be obtained from bleaching powder.

Explanation

To show that chlorine gas can be obtained from bleaching powder, we can follow these steps:

### Step 1: Identify Bleaching Powder
Bleaching powder is chemically known as calcium oxychloride, with the formula \( \text{Ca(OCl)}_2 \).

### Step 2: Write the Reaction with Water
When bleaching powder reacts with water, it undergoes a chemical reaction that produces calcium hydroxide and chlorine gas.

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