Diazotisation

Explanation

### Step-by-Step Solution for Diazotisation

**Step 1: Understanding Aniline**
- Aniline is an aromatic amine with the formula C6H5NH2. It consists of a benzene ring (C6H5) with an amino group (NH2) attached to it.

**Step 2: Diazotisation Reaction**
- The diazotisation process involves converting aniline into a diazonium salt. This is typically done by treating aniline with sodium nitrite (NaNO2) in the presence of hydrochloric acid (HCl) at low temperatures (0 to 5 degrees Celsius).

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