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The Percentage Composition Of A Hydrocarbon Is 79.2 Carbon 20.8 Hydrogen. Calculate Its Empirical Formula [H = 1, C = 12] - Erudites Academy
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A. CH
B. CH3
C. CH4
D. C2H2
E. C2H6

Correct Answer:

Option B – CH3

Explanation

Relative No of Moles for Carbon = 79.2% ÷ 12 = 6.6

Relative No of Moles for Hydrogen = 20.8% ÷ 1 = 20.8

Ratio of Moles = Carbon 6.6 ÷ 6.6 = 1 Hydrogen = 20.8 ÷ 6.6 = 3

CH3

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