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Oxidation of Alkanes

An organic co...

Question

An organic compound gave 0.4655 g of $C O_{2}$ on complete combustion. If the mass of the compound taken was 0.2115 g. what is the percentage of $C$ in it?

A

13.30%

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B

26.67%

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C

60.03%

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D

28.80%

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Solution

The correct option is A 60.03%
Mass of Carbon = 12u
Mass of $C O_{2}$ = 44u
Weight of $C O_{2}$ = 0.4655G
Weight of organic compound = 0.2115g
$Percentage of Carbon = \frac{Mass of Carbon}{Mass of C O_{2}} \times \frac{Weight of C O_{2}}{Weight of organic compound} \times 100$
$Percentage of Carbon = \frac{12}{44} \times \frac{0.4655}{0.2115} \times 100 = 58.4 % \approx 60.03 %$
Hence, option $C$ is correct answer.

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