4 (a) A bottle of wine is opened and left exposed to the air for a few days - Edexcel - GCSE Chemistry - Question 4 - 2013 - Paper 1
Question 4
4 (a) A bottle of wine is opened and left exposed to the air for a few days.
The ethanol in the wine reacts with oxygen from the air to form ethanoic acid.
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Worked Solution & Example Answer:4 (a) A bottle of wine is opened and left exposed to the air for a few days - Edexcel - GCSE Chemistry - Question 4 - 2013 - Paper 1
Step 1
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
In the reaction where ethanol reacts with oxygen to form ethanoic acid, ethanol is oxidised. This is because it loses hydrogen atoms, which is characteristic of oxidation.
Step 2
What is vinegar?
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Answer
Vinegar is a dilute solution of ethanoic acid, used widely in cooking and food preservation. It is created through the fermentation of ethanol.
