Question

What will be the normality of a solution obtained by mixing $0.45\text{N}$ and $0.60\text{N}$ $NaOH$ in the ratio $2:1$ by volume?

• A. $0.4\text{N}$
• B. $0.5\text{N}$
• C. $1.05\text{N}$
• D. $0.15\text{N}$

Answer 1

The correct option is B $0.5\text{N}$

$N=\frac{N_1{V}_1+N_2{V}_2}{V_1+V_2}=\frac{0.45\times 2+0.6\times 1}{2+1}=\frac{1.5}{3}=0.5\text{N}$