Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Making insoluble salts
19 practice questions
Practice questions
1–10 of 19
Question 1
1 mark · Easy
Answer and see the solution →State the name of the insoluble salt formed when solutions of barium nitrate and potassium sulfate are mixed.
Question 2
3 marks · Easy
Answer and see the solution →A student wants to prepare a sample of insoluble silver iodide by mixing solutions of two soluble salts.
(a)[2 marks]Name a suitable silver salt solution and a suitable iodide salt solution the student could use.
(b)[1 mark]State the colour of the precipitate formed.
Question 3
2 marks · Easy
Answer and see the solution →Write a balanced ionic equation, including state symbols, for the formation of calcium carbonate as a precipitate from aqueous solutions.
Question 4
2 marks · Easy
Answer and see the solution →In the reaction between zinc nitrate solution and sodium carbonate solution, a precipitate forms.
Explain which ions are the spectator ions in this reaction.
Question 5
3 marks · Easy
Answer and see the solution →A student mixes different pairs of solutions and records whether a precipitate forms. The results are shown in the table below.
Solution 1 Solution 2 Observation Magnesium sulfate Sodium carbonate White precipitate Potassium chloride Sodium nitrate No precipitate Calcium nitrate Sodium sulfate White precipitate Use the table to answer the questions.
(a)[1 mark]Which pair of solutions does NOT produce an insoluble salt?
(b)[1 mark]Name one insoluble salt formed in these reactions.
(c)[1 mark]Give a reason why no precipitate forms when potassium chloride and sodium nitrate are mixed.
Question 6
1 mark · Easy
Answer and see the solution →Complete the ionic equation for the formation of silver chloride: Ag^+(aq) + ___(aq) → AgCl(s)
Question 7
3 marks · Easy
Answer and see the solution →The following reaction occurs when lead(II) nitrate and sodium sulfate solutions are mixed:
(a)[1 mark]Name the precipitate formed.
(b)[2 marks]Identify all the spectator ions in this reaction.
Question 8
2 marks · Easy
Answer and see the solution →A student wishes to make an insoluble salt of strontium sulfate by mixing two suitable solutions.
Name two solutions the student can mix, and give the balanced chemical equation for the reaction.
Question 9
2 marks · Normal
Answer and see the solution →Describe how you would make an insoluble salt of calcium sulfate, starting from solutions of calcium nitrate and sodium sulfate.
Question 10
4 marks · Normal
Answer and see the solution →The insoluble salt lead(II) iodide can be made by a precipitation reaction involving lead(II) nitrate and potassium iodide.
(a)[2 marks]Write a balanced chemical equation, with state symbols, for this reaction.
(b)[2 marks]Write an ionic equation, with state symbols, for the formation of lead(II) iodide in this reaction.