Chapter 16, Problem 57E

Interpretation Introduction

Interpretation:

The number of grams of diethylamine dissolved in ethanol to produce $\text{4}\text{.70}\text{m}{\left({\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}\right)}_{\text{2}}\text{NH}$ 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.

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