Question

Equal volumes of 10% (w/v) $H_{2}S{O}_4$ solution and 10% (w/v) NaOH solution are mixed. The nature of the resulting solution will be:

• A. Neutral
• B. Acidic
• C. Basic
• D. Unpredictable

Answer 1

The correct option is C Basic

Equivalents of $H_{2}S{O}_4$ in 1 ml solution = mass in g per ml of solution divided by the equivalent mass $=\frac{\frac{10}{100}}{49}=x$
Equivalents of $NaOH$ in 1 ml solution = mass in g per ml of solution divided by the equivalent mass $=\frac{\frac{10}{100}}{40}=y$
As equal volumes are mixed, the number of equivalents would be $ky$ and $kx$. As $y>x$, the resulting solution would be basic.