9701 MCQ Solution 31

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Question 31: [Organic > Introductory Organic]:
Which compounds have the empirical formula CH2O?

1 methanal
2 ethanoic acid
3 methyl methanoate
Reference: Past Exam Paper – November 2002 Paper 1 Q31



Solution 31:
Answer: A.
Methanal: 1st degree aldehyde: HCHO: CH2O
Ethanoic acid: 2nd degree carboxylic acid: CH3COOH: C2H4O2: CH2O
Methyl Methanoate: Ester: HCO2CH3: C2H4O2: CH2O
Thus since all correct option A is the correct choice

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