Question

In Dumas' method of estimation of nitrogen 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be (aqueous tension at 300 K = 15 mm).

(a) 15.45

(b) 16.45

(c) 17.45

(d) 14.45

Answer 1

The correct option is: (b) 16.45

Explanation:

Given V₁ = 55 mL,V₂ = ?

P₁ 715 - 15 = 700 mm, P₂ = 760mm

T₁ = 300 K, T₂ = 273K