Write chemical reactions to affect the following transformations :
Benzyl alcohol to phenylethanoic acid

Explanation

To convert benzyl alcohol to phenyl ethanoic acid, we can follow these steps:

### Step 1: Conversion of Benzyl Alcohol to Benzyl Bromide
**Reaction:**
\[ \text{C}_6\text{H}_5\text{CH}_2\text{OH} + \text{HBr} \rightarrow \text{C}_6\text{H}_5\text{CH}_2\text{Br} + \text{H}_2\text{O} \]

**Explanation:** Benzyl alcohol (C₆H₅CH₂OH) reacts with hydrobromic acid (HBr) to form benzyl bromide (C₆H₅CH₂Br) and water.

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