When phenol is heated with phthalic anhydride and H_2SO_4, it produces

JEE Main Chemistry question

When phenol is heated with phthalic anhydride and , it produces

(A)Phenol red
(B)Methyl orange
(C)Salicylic acid
(D)PhenolphthaleinCorrect

Answer: (D)

Solution

Two molecules of phenol condense with one molecule of phthalic anhydride in the presence of concentrated to give phenolphthalein, a well-known acid–base indicator. Phenol red requires a

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-148630