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In ultimate analysis, how does the percentage of carbon and hydrogen are determined?

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in Engineering Chemistry II by (789k points)
In ultimate analysis, how does the percentage of carbon and hydrogen are determined?

(a) By using pure oxygen

(b) By using pure nitrogen

(c) By using pure sulphur

(d) By using pure silicon

The question was asked in exam.

I'm obligated to ask this question of Coal in portion Fuels and Combustion of Engineering Chemistry II

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Correct option is (a) By using pure oxygen

To explain: The weight of sample carrying carbon and hydrogen is placed in steam of pure oxygen in a combustion reaction similar to that for the analysis of organic compounds. Carbon and hydrogen are respectively converted into CO2 and H2O which are then absorbed settled down into different chambers.

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