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Question: Answered & Verified by Expert
Benzoic acid is a organic compound. Its crude sample can be purified by crystallization from hot water. What characteristic differences in the properties of benzoic acid and the impurity make this process of purification suitable?
ChemistryGeneral Organic ChemistryNEET
Options:
  • A Benzoic acid can be purified by hot water because impurities present in benzoic acid are either insoluble in water or more soluble in water to such an extent that they remain in solution as the mother liquor upon crystallization.
  • B Benzoic acid has high temperature.
  • C Benzoic acid forms a colored solution in hot water, allowing for easy separation.
  • D Benzoic acid and the impurity have identical properties, but the process relies on temperature control.
Solution:
2555 Upvotes Verified Answer
The correct answer is: Benzoic acid can be purified by hot water because impurities present in benzoic acid are either insoluble in water or more soluble in water to such an extent that they remain in solution as the mother liquor upon crystallization.
Correct Option is : (A)
Benzoic acid can be purified by hot water because impurities present in benzoic acid are either insoluble in water or more soluble in water to such an extent that they remain in solution as the mother liquor upon crystallization.

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