Chapter 12, Problem 12.136QP

Interpretation Introduction

Interpretation:

Molality of ${\text{Na}}_2{\text{CO}}_3$ in the solution made by dissolving $\text{18}{\text{.0 g Na}}_2{\text{CO}}_3{\text{.10H}}_{\text{2}}\text{O}$ in $\text{100}\text{.0 g}$ of water has to be determined.

Concept Introduction:

Molality is one of the many parameters that is used to express concentration of a solution.  It is expressed as,

$\text{Molality = }\frac{number\text{ of }molesof\text{ solute}}{mass\text{ of solvent in kg}}$