During estimation of nitrogen present in an organic compound by Kjeldahl’s method, the ammonia evolved from 0.5 g of the compound in Kjeldahl’s estimation of nitrogen, neutralized 10 mL of `1 M H_(2)SO_(4)`. Find out the percentage of nitrogen in the compound.

Explanation

`M of 10 m L H _(2) SO _(4) = 1 M of 20 mL NH _(3) 1000 mL. of ` 1 M ammonia contains 14 g nitrogen 20 mL of 1 M ammonia contains `(14 xx 20)/(1000) g ` nitrogen
Percentage of nitrogen `= (14 xx 20 xx 100)/(1000 xx 0.5) = 56. 0%`