Can we analyse the mixture of CO2/N2 using N2 as a carrier gas in GC considering the nitrogen content will be 100- content of CO2?
No, you cannot. if you perform GC analysis using N2 as carrier gas all you can get is 100% CO2. it means you need another carrier gas such as Ar to detect both N2 and CO2.
Yes, if you are sure, that your mixture is only CO2 and N2. Then the N2 content is 100% - CO2 content. If there are other impurities present, that you can quantify, you also substract them from 100%.
If you want to directly quantify N2, while using N2 as carrier gas, than the answer is, as already mentioned: no.
as far as I know the GC chromatogram shows the mole percent of the components. when you have only two components the result shows 100% CO2 mole percent using N2 as carrier gas. How can you determine the N2 mole percent?
Yes - if you are not measuring N2. And you need a gas standard with known CO2 mol% to quantity the sample's CO2 concentration. You also can consider to use He or Ar as carrier gas.
Can we do GC anlysis of the same gas having moisture content? Can we monitor moisture content in the gas mixture?
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