Amino acids have relatively high melting point as compared to corresponding haloacids. Explain.

Amino acids have relatively high melting point as compared to corresponding haloacids. Explain.
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Ans: Amino acids have relatively higher m.p as compared to corresponding haloacids. We know that amino acids have amino (basic) group and carboxylic (acid) group. A proton which comes from carboxylic group is accepted by amino group. Thus amino acid exists in the form of dipolar ion i.e. zwitter ion. Due to this ionic form amino acids become crystalline solids and due to this salt like structure show higher melting point.
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