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Per NCERT, the empirical formula of glucose is CH₂O. Given molar mass = 180 g/mol, what is the MOLECULAR formula?
AC₃H₆O₃
BC₂H₄O₂
CCH₂O
DC₆H₁₂O₆ (= 6 × CH₂O; molar mass of empirical 30 g/mol; ratio 180/30 = 6)
Answer & Solution
Correct answer: D. C₆H₁₂O₆ (= 6 × CH₂O; molar mass of empirical 30 g/mol; ratio 180/30 = 6)
Per NCERT §1.9.1, empirical mass of CH₂O = 30; molecular mass 180 / 30 = 6 → molecular formula = 6 × CH₂O = C₆H₁₂O₆.
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