Question : How many oxygen atoms are there in a molecule of acetic acid?
Option 1: 1
Option 2: 2
Option 3: 4
Option 4: 3
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Correct Answer: 2
Solution : The correct option is 2 .
The molecular formula of acetic acid is C 2 H 4 O 2 . Thus, there are two oxygen atoms in the acetic acid molecule. The structure of acetic acid is often represented as CH 3 COOH, where one carbon (C) is double-bonded to one oxygen (O) and single-bonded to another oxygen (O), which is also bonded to a hydrogen (H). The remaining carbon (C) is bonded to three hydrogen atoms (H).
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