Chapter 4, Problem 48E

Interpretation Introduction

Interpretation:

The method of preparing 250 mL of 0.175 M KCl from 2 L of 0.496 M KCl needs to be explained.

Concept introduction:

The molarity of solution is defined as number of moles of solute in 1 L of the solution. It is mathematically represented as follows:

$M=\frac{n}{V\left(\text{L}\right)}$

Here, n is number of moles of solute in 1 L of the solution.

For given mass of a solute, the number of moles can be calculated as follows:

$n=\frac{m}{M}$

Here, m is mass and M is molar mass of the solute.