Chapter 16, Problem 7PE

Interpretation Introduction

Interpretation:

The mass of calcium nitrate required to prepare $\text{0}\text{.75}\text{m}$ solution if mixed with $\text{2}\text{.00}\text{L}$ 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 no. of moles of solute by the weight of solvent in $\text{Kg}$.

This can be expressed mathematically as shown below.

$\text{M}=\frac{\text{n}}{\text{V}}$

Where,

• $\text{M}$ is the molarity.

• $\text{n}$ is the number of moles of solute.

• $\text{V}$ is the volume of solution in liters.