Question

The equivalent weight of an acid is equal to

• A. molecular weight/basicity
• B. melecular weight × basicity
• C. molecular weight × acidity
• D. molecular weight/acidity

Answer 1

Answer: (A)

Equivalent mass of an acid is defined as the number of parts by mass of it which contains 1.008 parts by mass of replaceable hydrogen or it in the quantity of the acid by mass that supplies one mole of $H^{+}$ ions.

Eq. mass of acid $=\frac{\text{ Molecular mass of the acid }}{\text{ Number of replaceable }H\text{ atoms }}$

$=\frac{\text{ Molecular mass of the acid }}{\text{ Basicity of the acid }}$