Question

A mixture of CO and CO² is found to have a density of 1.5 g/L at 30°C and 730 torr. What is the composition of the mixture.

Answer 1

Hi..

For a mixture of CO and CO2, d = 1.50 g/litre 

P = 730 / 760 atm, T = 303K 

PV =w / m RT; PV w / Vm RT 

730 / 760 = 1.5 / m × 0.0821 × 303 =∴ 38.85 

i.e. molecular weight of mixture of CO and CO2= 38.85 

Let % of mole of CO be a in mixture then 

Average molecular weight = a × 28 + (100 – a) 44 / 100 

38.85 = 28a + 4400 – 44a / 100 

a = 32.19 

Mole % of CO = 32.19 

Mole % of CO2= 67.81 

Answer 2

this is the answer hope it helps you