JEE Mains · Chemistry · STD 12 - 8.2 Carboxylic acids and their derivative
Identify the colour of compound \('X'\) in the sequence of the reaction.
- A Violet
- B Green
- C Red
- D Colourless
Answer & Solution
Correct Answer
(D) Colourless
Step-by-step Solution
Detailed explanation
The given reaction sequence represents the synthesis and acid-base behaviour of phenolphthalein. When phenol reacts with phthalic anhydride in the presence of concentrated \(H_2SO_4\), phenolphthalein is formed. In acidic or neutral medium, phenolphthalein exists in a lactone…
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