Question

$0.5g$ of a base was completely neutralized by $100mL$ of $0.2N$ acid. Equivalent weight of the base is :

• A. $50$
• B. $100$
• C. $25$
• D. $125$

Answer 1

The correct option is C $25$

Let the equivalent weight be $W$.

Number of equivalent of base $=\frac{0.5}{W}$

Comparing equivalents of base and acid :

$\frac{0.5}{W}=\frac{100\times 0.2}{1000}$

$\Rightarrow W=25$

Hence, option $C$ is correct.