A bottle of wine is left open to the air for several days. The wine turns sour because microorganisms oxidise the ethanol in the wine.
Name the organic product formed when ethanol is oxidised.
Write the balanced equation for the oxidation of ethanol, C2H5OH\mathrm{C_{2}H_{5}OH}C2H5OH, by oxygen.
Propanol can be oxidised in the same way. Give the name and the formula of the organic product.
Explain why propanol and ethanol are oxidised in the same way.
Describe a chemical test that would show the sour wine contains an acid. Give the result.
Calculate the maximum mass of the organic product that could form from 23.0 g of ethanol. Relative formula masses: C2H5OH=46,CH3COOH=60\mathrm{C_{2}H_{5}OH} = 46, \mathrm{CH_{3}COOH} = 60C2H5OH=46,CH3COOH=60
43 exam-style questions on Edexcel GCSE Chemistry 10.4 Alcohols and carboxylic acids, covering 10.4.1 Alcohols and the -OH functional group, 10.4.2 Carboxylic acids and the -COOH functional group, 10.4.3 Oxidation of alcohols and homologous series, and 10.4.4 Fermentation and fractional distillation of ethanol. Each one has a worked solution and a mark scheme showing where the marks go.