A mixture of CO and `CO_2` is found to have a density of 1.5 g/L at `30^(@)C` and 740 torr . What is the composition of the mixture .

Options

A. `CO = 0.3575 , CO_2 = 0.64225`
B. `CO = 0.64225 , CO_2 = 0.3575`
C. `CO = 0.500 , CO_(2) = 0.500`
D. `CO = 0.2500 , CO_(2) = 0.7500`

Explanation

Use expression , ` d = (PM)/(RT)`
`implies M = (dRT)/(P) = (1.5 xx 0.0821 xx 303 xx 76)/(74)`
`= 38.276`
Let one mole of the mixture contain , n mole of CO and (1 -n) mole of `CO_(2)`
`n xx 28 + (1 - n) xx 44 = 1 xx 38.276`
[Molecular weights , `CO = 28 CO_(2) = 44]` since n = 0.35775
Number of moles `CO = 0.35775` & number of moles of `CO_(2) = 0.64225`