Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Acids, Bases and Salt Preparations
156 practice questions
Topics covered
- Reactions of acids18 practice questions
- Reacting acids with bases19 practice questions
- Reacting acids with carbonates19 practice questions
- Salt preparations19 practice questions
- Making soluble salts (except sodium, potassium and ammonium salts)19 practice questions
- Making sodium, potassium and ammonium salts18 practice questions
- Making insoluble salts19 practice questions
- Theories of acids and bases19 practice questions
Practice questions
51–60 of 156
Question 51
2 marks · Normal
Answer and see the solution →Name the two products formed, apart from the salt, when a carbonate reacts with a dilute acid.
Question 52
4 marks · Normal
Answer and see the solution →(a)[2 marks]Write the ionic equation for the reaction between carbonate ions and hydrogen ions.
(b)[2 marks]Explain why water is formed in this reaction.
Question 53
3 marks · Normal
Answer and see the solution →A student adds powdered calcium carbonate to an excess of dilute nitric acid in a beaker. Bubbles of gas are observed.
State the chemical names of the three products formed in this reaction.
Question 54
2 marks · Hard
Answer and see the solution →State the general word equation for the reaction of a carbonate with an acid. Identify all the types of products that are always formed in this reaction.
Question 55
5 marks · Hard
Answer and see the solution →A student adds an excess of dilute nitric acid to a sample of iron(II) carbonate in a beaker.
(a)[2 marks]Write the balanced chemical equation for this reaction.
(b)[1 mark]Name the salt formed in this reaction.
(c)[2 marks]Write the total ionic equation for this reaction, omitting spectator ions.
Question 56
2 marks · Hard
Answer and see the solution →A student adds sodium carbonate to an excess of dilute hydrochloric acid. Bubbles are seen. Name the two non-salt products formed in this reaction.
Question 57
1 mark · Easy
Answer and see the solution →State whether sodium carbonate is soluble or insoluble in water.
Question 58
3 marks · Easy
Answer and see the solution →A student wants to prepare a pure, dry sample of lead(II) sulfate in the laboratory.
(a)[1 mark]State whether lead(II) sulfate is soluble or insoluble in water.
(b)[1 mark]Name two solutions that could be mixed to produce lead(II) sulfate.
(c)[1 mark]Describe one step the student must take after mixing the solutions to obtain a pure, dry sample of the salt.
Question 59
2 marks · Easy
Answer and see the solution →A solubility rule states that all potassium salts are soluble. Calculate the mass of potassium nitrate (KNO₃) that can dissolve in 100 g of water at room temperature if its solubility is 32 g per 100 g water.
Question 60
2 marks · Easy
Answer and see the solution →Explain why it is not suitable to prepare pure sodium chloride by mixing sodium carbonate with dilute hydrochloric acid and evaporating.