The empirical formula of a compound is CH2O. If 0.0833 moles of the compound contains 1 g of hydrogen, find the molecular formula of the compound.
A
C5H10O5
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B
C6H12O6
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C
C4H8O4
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D
C3H6O3
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Solution
The correct option is BC6H12O6
Empirical formula = CH2O
0.0833 moles of a compound contains 1 g of hydrogen atom
So, 1 mol of the compound will contain 10.0833 g ≈12 g of hydrogen atom
Molecular formula = n × empirical formula
where n is the simple whole number
Mass of hydrogen in molecular formula = 12 g
Mass of hydrogen in empirical formula = 2 g ∴ n = 6
MOlecular formula = (CH2O)6 = C6H12O6