Chapter 3.3, Problem 8ATS

Interpretation Introduction

Interpretation:

The more basic atom in the compound (1) has to be predicted and the structure of conjugate acid of (1) has to be drawn.

Concept Introduction:

Using $p{K}_a$values to compare Acidity: In general, acid-base reaction said to reach equilibrium; the position of equilibrium is described by the term $K_{eq}$. When an acid-base reaction is carried out in aqueous solution, the new term arrives by the term $K_a$.

$p{K}_a=-log{K}_a$

$p{K}_a$ Values are used as measure of acidity; a strong acid will have a low $p{K}_a$ and a weak acid will have a high $p{K}_a$.

Using $p{K}_a$values to compare Basicity: $p{K}_a$ Values are also used to compare bases; by drawing the conjugate acid of each base and compare the $p{K}_a$ values and identify the stronger base.

Bronsted-Lowry Acids and bases: Acid is defined as proton transfer and base is defined as proton acceptor; Bronsted acid and base reaction involves the transfer of Proton.

Conjugate acid: Protonated Base that gets results is called conjugate acid of the given base.

In above reaction, the acid $\text{HA}$ donates proton ${\text{H}}^{+}$ and becomes ${\text{A}}^{-}$(is known as conjugate base).

Conjugate Base: Deprotonated Acid that gets results is called conjugate Base of the given Acid.

In above reaction, the base ${\text{A}}^{-}$ gets accepts proton ${\text{H}}^{+}$ and becomes $\text{HA}$ (is known as conjugate acid).