JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Which of the following is most suitable to disperse benzene in water?

(A)A long-chain alkylbenzoate, Correct
(B)A long-chain dicarboxylate disodium salt, (no aromatic ring)
(C)A long-chain alkyl-toluene (methylbenzene) derivative with no ionic group
(D)A long-chain alkyl-chlorobenzene derivative with no ionic group

Answer: (A)

Solution

Option (A) has a hydrophilic ionic head and a hydrophobic alkyl/aryl tail, which is exactly the amphiphilic structure needed to solubilise (emulsify) a non-polar liquid like benzene in water, with the tail dissolving in benzene and the

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Question ID VK-145143