Give balanced equation for the preparation of salicylaldehyde from phenol.

Explanation

To derive the balanced equation for the preparation of salicylaldehyde from phenol, we will follow the steps outlined in the video transcript.

### Step 1: Reaction of Phenol with Chloroform
Phenol (C6H5OH) reacts with chloroform (CHCl3) in the presence of sodium hydroxide (NaOH). This reaction leads to the formation of sodium phenoxide (C6H5O^-Na^+) and the elimination of HCl and water.

**Equation:**
\[ \text{C}_6\text{H}_5\text{OH} + \text{CHCl}_3 + \text{NaOH} \rightarrow \text{C}_6\text{H}_5\text{O}^- \text{Na}^+ + 2 \text{HCl} + \text{H}_2\text{O} \]

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