Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Unit
Inorganic Chemistry
869 practice questions
Topics covered
- The Alkali Metals85 practice questions
- The Halogens86 practice questions
- Gases in the Atmosphere86 practice questions
- Reactivity Series163 practice questions
- Extraction and Uses of Metals128 practice questions
- Acids, Alkalis and Titrations83 practice questions
- Acids, Bases and Salt Preparations156 practice questions
- Chemical Tests68 practice questions
Practice questions
281–290 of 359 · Easy
Question 281
1 mark · Easy
Answer and see the solution →Write the word equation that shows what is always formed (other than the salt) when a carbonate reacts with an acid.
Question 282
1 mark · Easy
Answer and see the solution →State whether sodium carbonate is soluble or insoluble in water.
Question 283
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 284
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 285
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.
Question 286
3 marks · Easy
Answer and see the solution →The table below shows some ionic compounds. Complete the table by stating whether each compound is soluble or insoluble in water, according to the solubility rules.
Compound Soluble or Insoluble in water Copper(II) chloride Ammonium sulfate Calcium carbonate Question 287
1 mark · Easy
Answer and see the solution →State one method by which you could obtain a pure, dry sample of sodium sulfate from a solution.
Question 288
3 marks · Easy
Answer and see the solution →Use the solubility rules to answer the following questions.
(a)[1 mark]Are all nitrates soluble or insoluble in water?
(b)[1 mark]Give one example of a soluble sulfate.
(c)[1 mark]Name one insoluble chloride.
Question 289
2 marks · Easy
Answer and see the solution →A solution containing 10 g of sodium chloride is left to crystallise. If the maximum solubility of sodium chloride in water at room temperature is 36 g per 100 g of water, calculate whether all the salt will dissolve in 20 g of water.
Question 290
1 mark · Easy
Answer and see the solution →Write a balanced chemical equation for the reaction between magnesium and dilute sulfuric acid to form magnesium sulfate.