Chapter 16, Problem 20E

Interpretation Introduction

Interpretation:

The mass of ammonium chloride that is added to be a given volume of solution of $0.155\text{M}$

${\text{NH}}_{\text{3}}$ , in order to have pH $9.55$ to be calculated.

Concept introduction: Molarity of the solute in the solution is defined as the ratio of moles of the solute in the solution and the volume of solution.

Henderson-Hasselbalch equation provides an expression by which we can calculate the pH of a buffer solution by initial concentrations of the components of the buffer solution.

To determine: The mass of ammonium chloride that is added to a $2.55\text{L}$ volume of solution of $0.155\text{M}$${\text{NH}}_{\text{3}}$ , in order to have pH $9.55$ of the buffer.