Chapter 2, Problem 2.77P

Interpretation Introduction

Interpretation: In vitamin C, the most acidic hydrogen $\left(\text{H}\right)$ atom is to be identified.

Concept introduction: The most acidic hydrogen $\left(\text{H}\right)$ atom or proton is the one which can be easily eliminated from the molecule. This higher acidity of $\text{H-atom}$ is dependent upon the electronegativity of the functional groups that are bonded with carbon atom containing hydrogen. The elimination of a proton leads to the formation of a conjugate base. The higher stability of the conjugate base corresponds to the higher acidity of the proton.