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Amines
Question
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Aniline is more soluble in aq. HCl than in water. Explain. 

Answer

Aniline does not undergo hydrogen bonding because of the presence of the benzene which is highly hydrophobic. therefore aniline is insoluble in water.
In the HCl the amine group becomes protonated (-NH3+) and the ionic  hence soluble in HCl.

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