Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Organic Chemistry
785 practice questions
Topics covered
Practice questions
591–600 of 785
Question 591
7 marks · Hard
Answer and see the solution →A student is investigating the behaviour of ethanoic acid with different substances in the laboratory.
(a)[1 mark]State the main component of vinegar.
(b)[1 mark]Give one observation when magnesium metal is added to ethanoic acid.
(c)[2 marks]Write a balanced chemical equation for the reaction of ethanoic acid with magnesium.
(d)[2 marks]Explain why ethanoic acid reacts more slowly with magnesium than hydrochloric acid.
(e)[1 mark]Name the salt formed in the reaction between ethanoic acid and magnesium.
Question 592
7 marks · Hard
Answer and see the solution →This question is about carboxylic acids and their properties.
(a)[2 marks]Draw the displayed formula of propanoic acid.
(b)[1 mark]State how many carbon atoms are present in a molecule of propanoic acid.
(c)[2 marks]Describe what is meant by a weak acid. Use propanoic acid as an example in your answer.
(d)[2 marks]Propanoic acid reacts with sodium metal. Write a word equation for this reaction.
Question 593
7 marks · Hard
Answer and see the solution →Answer the following about unbranched-chain carboxylic acids and their reactions.
(a)[2 marks]Give the name and molecular formula of the unbranched-chain carboxylic acid with one carbon atom.
(b)[1 mark]Carboxylic acids react with magnesium carbonate. State one observation you would make during this reaction.
(c)[2 marks]Write a balanced chemical equation (using molecular formulae) for the reaction between ethanoic acid and magnesium carbonate.
(d)[2 marks]Using your knowledge of acid reactions, explain why the reaction between ethanoic acid and magnesium carbonate is slower than the reaction between hydrochloric acid and magnesium carbonate.
Question 594
1 mark · Easy
Answer and see the solution →Write the structural formula of the ester formed when ethanol reacts with propanoic acid.
Question 595
3 marks · Easy
Answer and see the solution →Describe what happens when ethanoic acid is heated with propanol and a few drops of concentrated sulfuric acid.
(a)[1 mark]State the type of reaction that occurs.
(b)[1 mark]Name the ester produced.
(c)[1 mark]Write a word equation for the reaction.
Question 596
2 marks · Easy
Answer and see the solution →An ester is made from butanoic acid and methanol.
(a)[1 mark]State the name of the ester formed.
(b)[1 mark]How many carbon atoms are there in the ester molecule?
Question 597
2 marks · Easy
Answer and see the solution →Explain how to work out the structure of the ester formed from pentanoic acid and ethanol.
Question 598
3 marks · Easy
Answer and see the solution →The table below shows reactants used to make different esters.
Table 1 Alcohol Carboxylic Acid Methanol Ethanoic acid Propanol Butanoic acid Butanol Methanoic acid (a)[1 mark]Name the ester formed from methanol and ethanoic acid.
(b)[1 mark]Write the structural formula for the ester formed from propanol and butanoic acid.
(c)[1 mark]State one use of esters.
Question 599
1 mark · Easy
Answer and see the solution →Name the ester made from propanol and methanoic acid.
Question 600
3 marks · Easy
Answer and see the solution →When butanol reacts with ethanoic acid:
(a)[1 mark]Write the name of the ester produced.
(b)[2 marks]Draw the full structural formula for the ester.