The melting point and solubility in water of amino acids are generally higher than that of the corresponding halo acids. Explain. Higher the polarity of a group , more is its solubitlity in water.

Explanation

Amino acids are dipolar in nature `(NH_3-CHR-COO^-)` and have strong dipolar interactions. Therefore, these have high melting point . When dissolved in water, these form hydrogen bonds with water molecules, therefore , these are soluble in water .(except at isoelectric point, where they have atleat solubility) in case of halo acids, these are not dipolar. Only their carboxyl group is involved in hydrogen bonding, not the halogen atom. Therefore, halo acids. have lower melting points and lesser solubility than amino acids