Give one reaction to show that phenol is acidic in character.

Explanation

To demonstrate that phenol is acidic in character, we can show its reaction with a strong base, such as sodium hydroxide (NaOH). Here’s the step-by-step solution:

### Step 1: Write the structure of phenol
Phenol has the chemical formula C6H5OH. It consists of a hydroxyl group (-OH) attached to a benzene ring.

### Step 2: Identify the acidic hydrogen
In phenol, the hydrogen atom of the hydroxyl group (-OH) is acidic. This means it can be released as a proton (H⁺) in a reaction.

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