Chapter 24, Problem 8STP

Interpretation Introduction

Interpretation: To show the reaction when glycine acts as an acid in reaction with water.

Concept introduction: Amino acids are amphoteric in nature since it has both carboxyl and amino acid groups which means they can behave as both acid and base.

Answer to Problem 8STP

The chemical equation where glycine acts as an acid can be depicted as follows:

  

Explanation of Solution

Glycine can act as both acids as well bases. In strongly alkaline conditions, glycine can act as a base. About all amino acids exist in zwitter ions.

The reaction of glycine with a base leads to the formation of a negative ion when an ammonium ion loses a proton.

The chemical equation can be depicted as follows:

  

Conclusion

In alkaline conditions, glycine behaves as an acid, it leads to the formation of a negative ion when an ammonium ion loses a proton.