Question

$0.366g$ of an organic base required $15mL$ of $\frac{N}{5}HCl$ for exact neutralisation. If the molecular weight of the base is $122$, find its acidity.

Answer 1

$B(OH{)}_n+HCl\to BCl+H_{2}O$

Organic $15mL$

Basic $\frac{1}{5}N$

$\therefore$ meq of $B(OH{)}_n=meq.ofHCl$

$\Rightarrow mmoles\times acidity=15\times \frac{1}{5}$

$\Rightarrow \frac{366}{122}\times acidity=\frac{15}{3}$

Acidity $=\frac{15}{5\times 3}=1$

$\therefore$ Acidity of organic base $=1$