Determine the normality () of a solution of Orthophosphoric acid (), assuming complete ionization in — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

The basicity (n-factor) of $H_3PO_4$ is 3, because it can furnish 3 $H^+$ ions per molecule. The relation is $\text{Normality} = \text{Molarity} \times \text{n-factor}$. Therefore, $N = 1.5 \times 3 = 4.5\text{ N}$.