Question

$100ml$ of $2MHCl$ solution completely neutralizes $10g$ of a metal carbonate. Then, the equivalent weight of the metal is:

• A. $50$
• B. $20$
• C. $12$
• D. $100$

Answer 1

The correct option is A $50$

Since $100ml$ of $2M$ $HCl$ solution completely neutralizes $10g$ of metal carbonate,

$\therefore$ No. of equivalents of $HCl$= No. of equivalents of metal carbonate

$\therefore 0.1\times 2=\frac{10}{Equivalentwt.}$

$\therefore$ Equivalent weight = $\frac{10}{0.2}=50$

Hence, option $A$ is correct.