Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Reaction with metals
18 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →Butanoic acid and hydrochloric acid have the same concentration. Explain why the pH of butanoic acid is higher than that of hydrochloric acid.
Question 2
5 marks · Hard
Answer and see the solution →A solution of ethanoic acid is reacted with calcium carbonate (CaCO₃) powder in a test-tube.
(a)[1 mark]State one observation you would make during the reaction.
(b)[2 marks]Write a balanced symbol equation for the reaction.
(c)[1 mark]Name the salt formed.
(d)[1 mark]Ethanoic acid reacts more slowly than hydrochloric acid of the same concentration. Explain why.
Question 3
2 marks · Hard
Answer and see the solution →Describe two ways you could show that propanoic acid is a weak acid.