Chapter 12, Problem 61RQ

Interpretation Introduction

Interpretation:

Using the given data, the molality of $\text{NaCl}$ in a solution is to be calculated.

Concept Information:

Molarity can be defined as the number of moles of solute per liter of solution.

Mathematically, molarity $\left(\text{M}\right)$ will be as follows:

$\text{M=}\frac{\text{Moles solute}}{\text{Liters solution}}$

Molality is the number of moles of solute to the mass of solvent.

The mass of the solvent should be in kilograms $\left(\text{kg}\right)$. The molality is calculated as follows:

$m=\frac{\text{Moles solute}}{\text{Kilograms solvent}}$

Relation between density $\left(d\right)$ and volume $\left(V\right)$ is as follows:

$d=\frac{m}{V}$