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JEE Main Chemistry question

ChemistryOrganic Chemistry - Some Basic Principles and TechniquesJEE Main

Partition coefficient of benzoic acid-ether-water in favour of ether is 2. A solution containing 8 g/litre benzoic acid in ether layer (1 litre) is shaken with 2 litre water. The concentration of acid in the water layer is:

Answer: (B)

Solution

Total benzoic acid g. Let = mass transferred to the 2 L water layer; ether retains g in 1 L.

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Question ID VK-143423