Question

50 ml of 0.2 N $HCl$, 50 ml of 0.1 N $H_2{SO}_4$ and 100 ml of 0.2 N ${HNO}_3$ are mixed. Normality of the resulting solution is:

• A. $0.1N$
• B. $0.15N$
• C. $0.175N$
• D. $0.2N$

Answer 1

The correct option is C $0.175N$

Resulting normality $=\frac{(N_1{V}_1+N_2{V}_2+N_3{V}_3)}{V_1+V_2+V_3}$

$\Rightarrow \frac{(0.2\times 0.05)+(0.1\times 0.05)+(0.2\times 0.1)}{(0.05+0.05+0.1)}$

$=0.175N$

Option C is correct.