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Question: \(0.92\)g of an organic compound was analysed by combustion method. The mass of the U – tube increas...

0.920.92g of an organic compound was analysed by combustion method. The mass of the U – tube increase by 1.08g.1.08g. what is the percentage of hydrogen in the compound?

A

13.04%13.04\%

B

52.17%52.17\%

C

65.21%65.21\%

D

11.30%11.30\%

Answer

13.04%13.04\%

Explanation

Solution

: Increase in mass of U – tube = 1.08g1.08g

18gH2O≡2gH18gH_{2}O \equiv 2gH

1.08gH2O=218×1.081.08gH_{2}O = \frac{2}{18} \times 1.08

% of hydrogen =218×1.080.92×100=13.04%= \frac{2}{18} \times \frac{1.08}{0.92} \times 100 = 13.04\%