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Question

Which of the following has the highest solubility in water?

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Choose one · Correct answer highlighted

Explanation

Solubility depends on hydrogen bonding with water. CH₃NH₂ (primary amine) forms more hydrogen bonds than (CH₃)₂NH (secondary) or (CH₃)₃N (tertiary), and C₆H₅NH₂ has lower solubility due to the hydrophobic benzene ring.

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