Chapter 21, Problem 133AE

Interpretation Introduction

Interpretation: The ions of alanine that predominate in a solution of $\text{1M}$ concentration of $\left[{\text{H}}^{\text{+}}\right]$ and $\left[{\text{OH}}^{\text{-}}\right]$ are to be stated.

Concept introduction: Alanine is defined as an amino acid which contains amine $\left({\text{-NH}}_{\text{2}}\right)$ and carboxyl $\left(\text{-COOH}\right)$ functional groups, along with a side chain (R group) that is methyl group attached to the chiral carbon atom. Alanine is an $\text{α}$-amino acid with a chemical formula ${\text{C}}_{\text{3}}{\text{H}}_{\text{7}}{\text{NO}}_{\text{2}}$ in which ${\text{-NH}}_{\text{3}}^{\text{+}}$ group is in a protonated form and ${\text{-COO}}^{\text{-}}$ group is in a deprotonated form. The methyl group in a side chain of alanine is non-reactive in nature and do not involve in protein function.

To determine: The ions of alanine that predominate in a solution of $\text{1M}$ concentration of $\left[{\text{H}}^{\text{+}}\right]$ and $\left[{\text{OH}}^{\text{-}}\right]$.