Question

During estimation of nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from 2 g of the compound neutralized 100 mL of 0.5 M H2SO4. If 2 g of this organic compound is used in Duma's method then x mL of nitrogen (N2) is collected at 300 K and 623 mm of Hg pressure. The value of x/30 is​

Answer 1

Explanation:

10 ml of MH2SO4 corresponds to 20 ml of 1M ammonia.

1000 ml of 1 M ammonia contains 14 g of nitrogen.

Hence, 20 ml of 1 M ammonia will contain 14×20÷1000 of nitrogen.

0.5 g of organic compound contains 14×20÷1000of nitrogen.

Hence, 100 g of compound will contain 14×20×100÷1000×0.5% of nitrogen.

B

C