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A hydrocarbon contained 14.3% hydrogen. The empirical for...

A hydrocarbon contained 14.3% hydrogen. The empirical formula for the hydrocarbon is [H= 1.0, C= 12.0]

A.

$CH$

B.

$CH_{2}$

C.

$CH_{3}$

D.

$CH_{4}$

View answer & explanation

Correct answer is B

The percentage of Carbon in the compound is (100 - 14.3)% = 85.7%

C : H

$\frac{85.7}{12.0} : \frac{14.3}{1.0}$

$7.14 : 14.3$

$\frac{7.14}{7.14} : \frac{14.3}{7.14}$

$\approxeq 1 : 2$

Therefore, the empirical formula is $CH_{2}$ .

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