Question

fill in the blank: Phenol on ___ readily gives picric acid because the OH group is __ directing.​

Answer 1

Answer:

Phenol on reaction with concentrated sulphuric acid and concentrated nitric acid readily gives picric acid because the OH group is ortho-para directing.​

Explanation:

• It is an organic substance, picric acid. Picric acid is known as 2,4,6-trinitrophenol in IUPAC. It is both an explosive chemical and an acidic phenol.
• In essence, concentrated sulphuric acid and concentrated nitric acid are used to transform phenol into picric acid. The ortho and para locations are attacked by nitro groups from nitric acid, which is the most advantageous and stable position for the newly produced molecule, picric acid as the -OH group of the phenol is ortho-para directing.

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