Question

100ml of 2M HCl solution completely neutralise 10g of a metal carbonate then equivalent weight of metal is?

Answer 1

For HCl
Molarity = Normality

Gram equivalents of HCl = Normality × Volume in litres
= 2 N × 100 × 10^-3 L
= 0.2 eq

For complete neutralisation
Gram equivalents of HCl = Gram equivalents of metal carbonate

Equivalent weight of metal = Weight of metal / Gram equivalents of metal
= 10 g / 0.2 eq
= 50 g/eq

∴ Equivalent weight of metal is 50 g/eq

Answer 2

Explanation:

so this is the correct answer