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JEE MainChemistryGeneral Organic Chemistry

Read the following statements regarding the separation and purification of organic mixtures. Identify the INCORRECT statement.

Options

  1. AChloroform and aniline are separated by fractional distillation because they are both liquids and their boilin
  2. BAniline and water are separated by steam distillation because aniline is steam volatile and immiscible with wa
  3. CBenzoic acid and naphthalene are separated by crystallization using hot water because benzoic acid is soluble
  4. DNaphthalene and sodium chloride are separated by sublimation because naphthalene is a sublimable solid while s

Correct answer

A. Chloroform and aniline are separated by fractional distillation because they are both liquids and their boilin

Step-by-step solution

Chloroform (boiling point 334 K ) and aniline (boiling point 457 K ) have a large difference in their boiling points ( T > 100 K ). Therefore, they can be easily separated by simple distillation, not fractional distillation. Fractional distillation is used when the difference in boiling points is small (typically less than 25 K ). Aniline is steam volatile and immiscible with water, making steam distillation the correct method for its separation from water. Benzoic acid is soluble in hot water whereas naphthalene i

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