Atomic Fractions: Calculating Xc & Xo in H2, H2O & CO2

[jamesdawson19]

Hi Guys,

I have a bit of a problem with some course work please help:

The question is: Determine the atomic fractions Xc and Xo (carbon and oxygen) for the following gas composition at room temperature:
50% H2, 30% H2O, 20% CO2

I am sure you need to work out the partial pressures for each of the substances at room temp and then determine how much carbon/oxygen will be present, however i have no idea how to do this

Please help

Much appreciated.

 

[gneill]

The question is: Determine the atomic fractions Xc and Xo (carbon and oxygen) for the following gas composition at room temperature:
50% H2, 30% H2O, 20% CO2

If those are number percentages (rather than mass percentages) then a particular sample of the mixture might have:

50 H2 molecules
30 H2O molecules
20 CO2 molecules

If this sample were to be dissociated into its component atoms and they were binned and counted, how would that look?

 

[jamesdawson19]

Hi Gneill,

That is the answer than i am going with H:O:C = 16:7:2 so O = 28% and C is 8%

Thanks for your help