How calcium hydroxide is prepared?

Explanation

To prepare calcium hydroxide (Ca(OH)₂), there are two main methods: a commercial method and a laboratory method. Here’s a step-by-step breakdown of each method:

### Method 1: Commercial Preparation using Lime
1. **Start with Calcium Oxide (Lime)**: Obtain calcium oxide (CaO), commonly known as lime.
2. **Add Water**: Slowly add water to the calcium oxide.
3. **Reaction**: The reaction between calcium oxide and water produces calcium hydroxide.
\[
\text{CaO} + \text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2
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