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Edexcel IGCSE Chemistry 4.36C Reactions of Aqueous Carboxylic Acids

Practise completing equations and predicting observations when aqueous carboxylic acids react with metals or metal carbonates.

Syllabus
First assessment 2019
Course
Chemistry 4CH1

Exam points

  • complete acid–metal equations to form a carboxylate salt and hydrogen gas
  • complete acid–carbonate equations to form salt, carbon dioxide and water
  • identify effervescence and confirm carbon dioxide with limewater where required

4.36C Carboxylic acid reactions question 1

[Maximum number: 2]

Some cars in Brazil use ethanol, C2H5OH\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}, as a fuel instead of petrol.
The ethanol is made by the fermentation of glucose which is obtained from sugar cane.
The sugar is extracted from the sugar cane and then dissolved in water to make a sugar solution.

When ethanol is heated with acidified potassium dichromate(VI), it is oxidised to ethanoic acid.

Complete the equation for the reaction of ethanoic acid with sodium.

............ CHX3COOH(aq)\ce{CH3COOH(aq)} + ............ Na(s)\ce{Na(s)} -> ................................ (aq) + ................................ (g)

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