Problem

A sulfuric acid solution containing 571.5 g of H_{2} SO_{4} per liter of aqueous solution has a density of 1.329 g/cm^{3}.

Calculate the molarity of H_{2} SO_{4} in this solution.

Solution

We have to calculate the molarity of H_{2}SO_{4} in solution using its mass and solution volume.

**Molarity** is calculated by this formula:

$\overline{){\mathbf{Molarity}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}\frac{\mathbf{moles}\mathbf{}\mathbf{of}\mathbf{}\mathbf{solute}}{\mathbf{liters}\mathbf{}\mathbf{of}\mathbf{}\mathbf{solution}}}$

The **number of moles** of solute can be calculated by this formula:

$\overline{){\mathbf{moles}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}\frac{\mathbf{mass}}{\mathbf{molar}\mathbf{}\mathbf{mass}}}$

Molarity