How will you obtain the following ? (Give balanced equation.)
Picric acid from phenol.

Explanation

To obtain picric acid from phenol, we will follow these steps:

### Step 1: Identify the Reactants
We start with phenol (C6H5OH) as our primary reactant. To convert phenol into picric acid (2,4,6-trinitrophenol), we need to nitrify it.

### Step 2: Nitration Process
The nitration of phenol involves treating it with a mixture of concentrated nitric acid (HNO3) and concentrated sulfuric acid (H2SO4). The sulfuric acid acts as a catalyst and helps generate the nitronium ion (NO2+), which is the active nitrating species.

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