Class 12 Chemistry - Chapter Biomolecules NCERT Solutions | The melting points and solubility in wat

Welcome to the NCERT Solutions for Class 12th Chemistry - Chapter Biomolecules. This page offers a step-by-step solution to the specific question from Exercise 1, Question 4: the melting points and solubility in water of amin....
Question 4

The melting points and solubility in water of amino acids are generally higher than that of the corresponding halo acids. Explain.

Answer

Both acidic (carboxyl) as well as basic (amino) groups are present in the same molecule of amino acids. In aqueous solutions, the carboxyl group can lose a proton and the amino group can accept a proton, thus giving rise to a dipolar ion known as a zwitter ion.

Due to this dipolar behaviour, they have strong electrostatic interactions within them and with water. But halo-acids do not exhibit such dipolar behaviour.

For this reason, the melting points and the solubility of amino acids in water is higher than those of the corresponding halo-acids.

Popular Questions of Class 12 Chemistry

Recently Viewed Questions of Class 12 Chemistry

2 Comment(s) on this Question

Write a Comment: