Ethanol can be oxidised by heating with potassium dichromate(VI) in dilute sulfuric acid
2 marks · NormalDescribe what happens when ethanol is oxidised by heating it with potassium dichromate(VI) in dilute sulfuric acid.
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Ethanol is oxidised to ethanoic acid (or acetic acid) and the potassium dichromate(VI) is reduced.
Also accept: Ethanol is oxidised to acetic acid.; Ethanol reacts to form ethanoic acid in the presence of potassium dichromate(VI) and dilute sulfuric acid.
Common mistakes: Ethanol turns into vinegar without specifying ethanoic acid.; No mention of ethanoic acid or acetic acid.
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Marking points
M1 · 1 mark · Describes ethanol being oxidised/undergoing oxidation.
A1 · 1 mark · Names ethanoic acid (or accepts acetic acid) as the product.
Worked solution
When ethanol is heated with potassium dichromate(VI) in dilute sulfuric acid, ethanol is oxidised to ethanoic acid. The potassium dichromate(VI) is reduced in the process.