In Dumas' method for estimation of nitrogen 1g of an organic compound gave 150 mL of nitrogen collected at 300 K temperature and 900 mm Hg pressure. The percentage composition of nitrogen in the compound is_____ % (nearest integer).
(Aqueous tension at 300 K = 15mm Hg)

Question

In Dumas' method for estimation of nitrogen 1g of an organic compound gave 150 mL of nitrogen collected at 300 K temperature and 900 mm Hg pressure. The percentage composition of nitrogen in the compound is_____ % (nearest integer).

(Aqueous tension at 300 K = 15mm Hg)

TestHub · Accepted Answer

Partial pressure of N 2 ​ = ( 900 − 15 ) = 885 mm Hg Mole of N 2 ​ = ( 0.0821 × 300 ) ( 760 885 ​ × 0.15 ) ​ = 0.0071 moles % of nitrogen in organic compound ​ = 1 ( 0.0071 × 28 ) ​ × 10 ​ = 19.85% ​

Chemistry - PRACTICAL ORGANIC CHEMISTRY Question with Solution | TestHub

Doubts & Discussion