Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Salt preparations
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →State two exceptions to the general solubility of chlorides in water. For each exception, name the insoluble chloride.
Question 2
5 marks · Hard
Answer and see the solution →You are asked to prepare a pure, dry sample of magnesium sulfate in the laboratory using insoluble magnesium carbonate and dilute sulfuric acid.
(a)[2 marks]Explain why magnesium carbonate and sulfuric acid can be used to prepare magnesium sulfate by this method.
(b)[3 marks]Describe the steps you would take to obtain a pure, dry sample of magnesium sulfate from these reactants.
Question 3
2 marks · Hard
Answer and see the solution →State the general solubility rules for carbonates and hydroxides of common metals in water.