Chapter 14.3, Problem 14.26QAP

Interpretation Introduction

Interpretation:

“Write an equation for the acid-base reaction between nitrous acid and hydroxide ion. Why does the equilibrium mixture contain mostly products.” should be explained.

Concept introduction:

► Bronsted-Lowry acid-base system:

► Acid: According to Bronsted-Lowry concept; substance which donates the proton or ${\text{H}}^{\text{+}}$(hydrogen ion) are said to be acid. Proton donor is a Bronsted-Lowry acid.

► Base: According to Bronsted-Lowry concept; substance which accepts the proton or ${\text{H}}^{\text{+}}$(hydrogen ion) are said to be base. Proton acceptor is a Bronsted-Lowry base.

$\begin{array}{l}{\text{HCl + NH}}_{\text{3}}\to {\text{NH}}_{\text{4}}^{\text{+}}{\text{ + Cl}}^{-}\\ \text{Acid base}\end{array}$

► Conjugated acid-Base Pairs:

The pair of Acid-Base which is differs by a proton is called conjugated Acid-Base pair. The acid of conjugated acid-base pair has one more hydrogen atom from base of conjugated acid-base pair.

$\begin{array}{l}{\text{ HCl + NH}}_{\text{3}}\to {\text{ NH}}_{\text{4}}^{\text{+}}{\text{ + Cl}}^{-}\\ \text{Acid base conjugated acid conjugated base}\end{array}$

► The direction of acid base is that where strong acid and strong base will form weak acid and weak base.