A compound X has the empirical formula CH₂O and a molar mass of 180 g mol⁻¹. The molecular formula of X is
AC₂H₄O₂
BC₃H₆O₃
CC₆H₁₂O₆CORRECT
DC₄H₈O₄
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The empirical formula mass of CH₂O = 12 + 2 + 16 = 30 g mol⁻¹. Dividing the molar mass by the empirical formula mass: 180 ÷ 30 = 6. Therefore the molecular formula is (CH₂O)₆ = C₆H₁₂O₆, which corresponds to glucose.
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