Question

$20\, ml$ of $N/10 \,HCl$, $30\, ml$ of $N/15 \,HNO_{3}$ and $40\, ml$ of $N H_{2}SO_{4}$ are mixed. What will be normality of the resulting solution ?

• A. $44/90$
• B. $90/44$
• C. $22/90$
• D. $90/95$

Answer 1

Answer: (A)

$44/90$

Answer 2

As we know from the law of equivalence that $N_{1}V_{1}+N_{2}V_{2}+N_{3}V_{3}=N_{R}V_{R}$ $20\times \frac{1}{10}+30\times \frac{1}{15}+40\times1$ $=N_{R}\times90$ $N_{R}=\frac{44}{90}$