Specification Point 4.37C (Paper 2C Only):
Know that vinegar is an aqueous solution containing ethanoic acid
Vinegar: an aqueous solution containing ethanoic acid.
Diagram showing an atom of ethanoic acid
Formation of vinegar (Ethanoic acid):
- The microbial oxidation of ethanol will produce a weak solution of vinegar (ethanoic acid).
- This occurs when a bottle of wine is opened as bacteria in the air (acetobacter) will use atmospheric oxygen from air to oxidise the ethanol in the wine.
Ethanol + Oxygen → Ethanoic Acid + Water
C2H5OH 3O2 CH3COOH 3H2O
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