Chapter 12, Problem 37E

Interpretation Introduction

Interpretation:

The molarity of $\text{KCl}$ solution with given mass and volume of solution is to be determined.

Concept Introduction:

Molarity is defined as the number of moles of solute per liter of solution. Mathematically, molarity $\left(\text{M}\right)$ is calculated as:

$\text{Molarity}\left(\text{M}\right)=\frac{\text{Moles solute}}{\text{Liters solution}}$

The volume of solution should be in liters and the unit of molarity is $\text{M}$.

The relation between the numbers of moles $\left(n\right)$ and molar mass is:

$n=\frac{m}{\text{molar mass}}$

The relationship between liters and milliliters can be expressed as: $\text{1 mL}={10}^{-3}\text{ L}$

To convert milliliters $\text{(mL)}$ to liters $\left(\text{L}\right)$, conversion factor is $\left(\frac{{10}^{-3}\text{ L}}{\text{1 mL}}\right)$

The molar mass of $\text{KCl}$ is calculated as:

$\text{Molar mass of KCl}=\text{ atomic mass of K + atomic mass of Cl}$