Chapter 16, Problem 11E

Interpretation Introduction

Interpretation:

The pH of the given solutions is to be calculated by Henderson-Hasselbalch equation.

Concept introduction: The molecular formula provides the total number of atoms and kinds of atom in a molecule.

Molecular formula of a particular molecule is the chemical formula that provides the total number of atoms of every element in each molecule of a substance.

To determine: The pH of the solutions, $0.15\text{M}$ in ${\text{HCHO}}_{\text{2}}$ and $0.10\text{M}$ in ${\text{NaCHO}}_{\text{2}}$ , $0.12\text{M}$ in ${\text{NH}}_{\text{3}}$ and $0.18\text{M}$ in ${\text{NH}}_4\text{Cl}$ by Henderson-Hasselbalch equation.