Bleaching powder is obtained by the interaction of `Cl_2` and

Options

A. dilute solution of `Ca(OH)_(2)`
B. concentrated solution of `Ca(OH)_(2)`
C. dry calcuim oxide
D. dry slaked lime

Answer

To solve the question regarding the interaction of chlorine gas (Cl₂) to obtain bleaching powder, we can break down the process into clear steps:

### Step-by-Step Solution:

1. **Identify the Components**:
- We know that bleaching powder is a chemical compound with the formula \( \text{Ca(OCl)}_2 \).
- The main reactants involved in the formation of bleaching powder are chlorine gas (\( \text{Cl}_2 \)) and dry slaked lime.

2. **Define Dry Slaked Lime**:
- Dry slaked lime is chemically represented as calcium hydroxide (\( \text{Ca(OH)}_2 \)). It is important to note that it should be dry to facilitate the reaction with chlorine.

3. **Write the Reaction**:
- The reaction between chlorine gas and dry slaked lime can be represented as follows:
\[ \text{Cl}_2 + \text{Ca(OH)}_2 \rightarrow \text{Ca(OCl)}_2 + \text{H}_2\text{O} \]
- Here, chlorine reacts with calcium hydroxide to produce bleaching powder and water.

4. **Conditions for Reaction**:
- This reaction typically occurs at a temperature below 35 degrees Celsius to ensure the formation of bleaching powder without decomposition.

5. **Final Product**:
- The product formed from this reaction is bleaching powder, which is \( \text{Ca(OCl)}_2 \).

### Conclusion:
Bleaching powder is obtained by the interaction of chlorine gas (\( \text{Cl}_2 \)) and dry slaked lime (\( \text{Ca(OH)}_2 \)).

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