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
311–320 of 359 · Easy
Question 311
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 312
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 313
1 mark · Easy
Answer and see the solution →State, according to the Arrhenius theory, what an alkali produces in water.
Question 314
3 marks · Easy
Answer and see the solution →Ammonia reacts with hydrochloric acid to form ammonium chloride. Use the Bronsted-Lowry theory to explain this reaction.
(a)[1 mark]State which reactant acts as the acid.
(b)[1 mark]State which reactant acts as the base.
(c)[1 mark]Explain your answers in terms of proton transfer.
Question 315
2 marks · Easy
Answer and see the solution →For the following reaction, identify the Bronsted-Lowry acid and base on the left-hand side.
(a)[1 mark]Identify the acid.
(b)[1 mark]Identify the base.
Question 316
2 marks · Easy
Answer and see the solution →Describe how the hydroxonium ion, H_3O^+, forms when an acid is added to water, and explain its importance in acid–base reactions.
Question 317
3 marks · Easy
Answer and see the solution →The table shows whether these reactions occur in water according to the Arrhenius and Bronsted-Lowry theories.
Reactions and Theories Reaction Explained by Arrhenius? Explained by Bronsted-Lowry? HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l) Yes Yes NH3(aq) + H2O(l) → NH4+(aq) + OH-(aq) No Yes HCl(g) + NH3(g) → NH4Cl(s) No Yes (a)[1 mark]According to the table, which theory can explain all three reactions?
(b)[1 mark]Which reaction(s) are explained only by the Bronsted-Lowry theory, not the Arrhenius theory?
(c)[1 mark]State one key difference between the two theories based on the reactions above.
Question 318
1 mark · Easy
Answer and see the solution →State what happens to a base in a Bronsted-Lowry acid–base reaction.
Question 319
3 marks · Easy
Answer and see the solution →For each of the following reactions, identify the acid and the base according to the Bronsted-Lowry theory.
(a)[1 mark]Acid: ________ Base: ________
(b)[1 mark]Acid: ________ Base: ________
(c)[1 mark]Acid: ________ Base: ________
Question 320
2 marks · Easy
Answer and see the solution →The reaction below shows how the hydroxonium ion reacts with a base.
a) Identify the base. b) Calculate how many molecules of water are formed when 1 mole of H_3O^+ reacts completely with 1 mole of OH^-.
(a)[1 mark]Name the base in this reaction.
(b)[1 mark]Give the number of water molecules formed (state your answer as a number).