Write chemical equation to prepare bleaching powder.

Answer

To prepare bleaching powder, we can follow these steps to write the chemical equation:

### Step-by-Step Solution:

1. **Identify the Reactants**: The main reactants for the preparation of bleaching powder are slaked lime (calcium hydroxide, Ca(OH)₂) and chlorine gas (Cl₂).

2. **Chemical Reaction**: When chlorine gas is passed through slaked lime, a chemical reaction occurs.

3. **Write the Chemical Equation**:
- The balanced chemical equation for the reaction can be written as:
\[ \text{Ca(OH)}_2 (aq) + \text{Cl}_2 (g) \rightarrow \text{Ca(OCl)}_2 (s) + \text{H}_2O (l) \]
- Here, calcium hypochlorite (Ca(OCl)₂), which is bleaching powder, is formed along with water (H₂O).

4. **Final Equation**: The final equation can be summarized as:
\[ \text{Ca(OH)}_2 + \text{Cl}_2 \rightarrow \text{Ca(OCl)}_2 + \text{H}_2O \]