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An amine that is insoluble in water can be made to dissolve by adding to aqueous...

An amine that is insoluble in water can be made to dissolve by adding to aqueous solution of?
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Answer #1

An amine that is insoluble in water can be made to dissolve by adding to aqueous solution of - hydrochloric acid ( HCl). Because they will form an hydrochloride salt which will be water soluble.

Because of the acid base reaction:

R3N(aq)+HCl(aq)→R3N⋅H+Cl-(aq)

The amine is now a salt and is in principle water soluble (a quaternary ammonium salt is formulated as R4N+)

we can also write it as as trialkylamine hydrochloride, R3N⋅HCl; in both cases the nitrogen is quaternized. hence water soluble

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