Chapter 16, Problem 56E

Interpretation Introduction

Interpretation:

The molality of a solution prepared by dissolving $\text{18}\text{.8}\text{g}$ of ammonium iodide in $4.50\times {10}^2\text{mL}$ of water is to be calculated.

Concept introduction:

Molality is defined as the measure of concentration of moles of solute in a solution. It is calculated by dividing the number of moles of solute by the weight of solvent in $\text{Kg}$. It is expressed by the formula shown below.

$\text{Molality}=\frac{\text{Number}\text{of}\text{moles}\text{of}\text{solute}}{\text{Weight}\text{of}\text{solvent}\text{in}\text{Kg}}$