Question

$100ml$ of $2M$ $HCl$ solution completely neutralises $10g$. 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 $50$

We know that for $HCl⟶$ Molarity= Normality

Gram equivalents of $HCl=Normality\times Volume$

$=2N\times 100\times {10}^{-3}$

$=0.2eq$ .

After complete neutralisation

Gram equivalent $HCl$= Gram equivalents of metal carbonate

Equivalent of metal= $\frac{\text{Weight of metal}}{\text{Gram equivalent of metal}}$

$=\frac{10}{0.2}=50gm/eq$ .