Question

When $40mL$ of $0.1NHCl$ and $20mL$ of $0.1M{H}_{2}S{O}_4$ are mixed together, the normality of the mixture will be:

• A. $\frac{1}{5}N$
• B. $\frac{2}{15}N$
• C. $\frac{15}{2}N$
• D. $\frac{5}{1}N$

Answer 1

The correct option is B $\frac{2}{15}N$

$N_1{V}_1+N_2{V}_2=N_R(V_1+V_2)$
$0.1\times 40+0.2\times 20=N_R\left(60\right)$
$N_R=\frac{8}{60}=\frac{2}{15}$.