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QJEEM23Chedce: JEE Main 2023 Chemistry - Class 11 JEEM23Chedce Solution: A compound ' ' when treated with phthalic anhydride in presence …

A compound ' X\mathrm{X} ' when treated with phthalic anhydride in presence of concentrated H2SO4\mathrm{H}_{2} \mathrm{SO}_{4} yields ' Y\mathrm{Y} '. ' Y\mathrm{Y} ' is used as an acid/base indicator. ' X\mathrm{X} ' and ' Y\mathrm{Y} ' are respectively

Multiple Choice Options

  • A Toludine, Phenolphthalein
  • B Carbolic acid, Phenolphthalein
  • C Salicylaldehyde, Phenolphthalein
  • D Anisole, methyl orange

Step-by-Step Verified Solution

Phenolphthalein is a commonly used acid/base indicator that can be synthesized from phthalic anhydride and phenol (carbolic acid) in the presence of concentrated sulfuric acid (H₂SO₄). Therefore, compound 'X' is phenol and compound 'Y' is phenolphthalein.

JEE Main 2023 (Online) 8th April Evening Shift Chemistry - Practical Organic Chemistry Question 21 English Explanation

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