Question

If average molecular wt. of air is 29, then assuming n2 and o2 gases are there wch options are correct regarding composition of air

Answer 1

CALCULATIONS :

Molar mass of Nitrogen gas = 14 × 2 = 28

Molar mass of oxygen = 16× 2 = 32

Ratio of the molar masses.

N₂ : O₂

28 : 32

7 : 8

The total mass is = 29

Nitrogen composition : (7/15) × 29 = 13.53g

Oxygen composition :( 8 / 15) × 29 = 15.45g

Oxygen has a higher concentration compared to Nitrogen.