Chapter 18, Problem 52E

Interpretation Introduction

Interpretation: The number of moles of $\text{Ca}{\left(\text{OH}\right)}_2$ and ${\text{Na}}_2{\text{CO}}_3$ required to soften the given volume of water is to be calculated.

Concept Introduction: The number of moles of calcium and magnesium ions in the solution is calculated by multiplying their molarity with the volume of water.

To determine: The number of moles of $\text{Ca}{\left(\text{OH}\right)}_2$ and ${\text{Na}}_2{\text{CO}}_3$ required to soften $1200\text{L}$ water.