The formula weight of an acid is \(82\). In a titration, \(100 cm^3\) of a solution of this acid containing \(39.0 g\) of the acid per litre were completely neutralized by \(95.0 cm^3\) of aqueous \(NaOH\) containing \(40.0 g\) of \(NaOH\) per litre. What is the basicity of the acid?

2

The correct answer is option 2. 2.

Normality of \(NaOH\) \(= 1\)

Normality of acid \(= \frac{1 × 95}{100} = 0.95\)

Suppose the equivalent mass of the acid is \(E\)

\(\frac{39}{E} = 0.95\)

or, \(E = 41\)