Question

What is the molarity of a 2.58 L solution containing 0.68 moles of solute?

Answer 1

Molarity is defined as moles of solute per liter of solution. The corresponding equation is as follows:

$\text{Molarity}=\frac{\text{Moles of solute}}{L\text{ of solution}}$

Both data are given in the statement so we proceed to substitute the known values in the equation:

$\begin{gathered} \text{Molarity = }\frac{\text{0.68 moles of solute}}{2.58\text{ L solution}} \\ \text{Molarity = 0.26 }\frac{\text{mol}}{L}=0.26M \end{gathered}$

So, the molarity of the solution will be 0.26M