Chapter 17, Problem 80E

Interpretation Introduction

Interpretation : The percent composition of the NaCl solution by mass should be calculated.

Concept Introduction :

Changes in freezing and boiling points can be obtained by the following modified equation.

  $\Delta T=imK$

  $\begin{array}{l}\Delta T\text{ - Boiling point elevation or Freezing point depression}\\ \text{i - van't Hoff factor}\\ \text{m - molality}\\ \text{K - freezing point depression constant or boiling point elevation constant}\end{array}$

  $i=\frac{\text{moles of particles in solution}}{\text{moles of solute dissolved}}$