α-amino acids have relatively higher melting points than corresponding halo acids. Explain.

Asked by Topperlearning User | 22nd Jun, 2016, 09:09: AM

Expert Answer:

The α-amino acids exist as a zwitter ion,

Therefore, due to strong inter molecular dipolar attractions or electrostatic attractions, the melting points of α-amino acids are much higher than those of corresponding halo acids which are covalent compounds and have only weak intermolecular hydrogen bonding in them.

Answered by  | 22nd Jun, 2016, 11:09: AM