Why are the gas chromatograms of fresh petrol and partially evaporated pertol differnt?

1 Answer
anor277
Mar 26, 2018

Would you not expect them to be....?

Explanation:

The fuel we puts into our Goggomobiles is a mixture of isomeric alkanes...#C_4H_10-C_7H_16#...and there could be olefins present in the mix as well. Each individual isomer has a characteristic boiling point. And if the petrol is partially evaporated you would strip off the more volatile isomers...and this would CLEARLY result in different chromatographs....the sample subjected to vacuum would be enriched with THE MORE INVOLATILE components....

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