The definition of molarity is:
Molarity = moles of solute / total volume of solution in
Liters
In this case, our solute is Sulfuric Acid. To solve this
problem, let us assume a basis for calculation.
Let us say that,
Total mass of solution = 100 g
Therefore mass of H2SO4 = 20 g
<span>The molar mass of H2SO4 = 98.079 g / mol</span>
Calculating for number of
moles of H2SO4:
number of moles = <span>20 g
/ (98.079 g / mol)</span>
number of moles = 0.204
mol
Calculating for the volume
of solution using the density:
<span>total volume of solution = 100 g / (1.105 g / mL)</span>
<span>total volume of solution = 90.50 mL = 0.0905 L</span>
Therefore the molarity is:
Molarity = 0.204 mol / 0.0905
L
Molarity = 2.2542 mol / L
<span>Molarity = 2.25 M</span>
