Chapter 9, Problem 9.105E

Interpretation Introduction

Interpretation:

The reason as to why a solution of solid ${\text{NH}}_{\text{4}}\text{Cl}$ dissolved in pure water is acidic is to be explained.

Concept introduction:

The pH of a solution determines whether a given solution is acidic, basic or neutral. A value equal to the negative logarithm of concentration of hydrogen ions in a solution gives the pH of the solution. The pH scale ranges from $0$ to $14$. The value of pH equal to $7$ shows that the solution is neutral. This means that the concentration of ${\text{H}}_{\text{3}}{\text{O}}^{\text{+}}$ and the concentration of ${\text{OH}}^{-}$ in the solution are equal. A value of pH less than $7$ indicates that the solution is acidic whereas a value of pH greater than $7$ indicates that the solution is basic.