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Aniline dissolve in aqueous HCl. Why?...

Aniline dissolve in aqueous HCl. Why?

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Amines dissolves in water due to H-bonding In amines, the `R-` or Ar-group is hydropholic.
As the size of hydropholic group increases, H-bonding and hence solubility in water decreases. Due to large size of phenyl group `(Ar-)` aniline is not much soluble in water. However, on adding HCl, aniline readily dissolves in water. It is due to salt formation which ionises and the ions so formed interact with polar water molecules (ion dipole interactions) and hence solubility increases.
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