All topics › AQA GCSE Chemistry › Neutralisation and salt production4.2.2 Neutralisation and salt productionAQA GCSE Chemistry (8462), Higher tier · Chemical changes › Reactions of acids
Practise Neutralisation and salt production. 12 exam-style questions on this subtopic, at up to four difficulty levels, with full mark schemes and a progress tracker. Free, no account needed.
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Name the salt produced when sodium hydroxide reacts with nitric acid. sodium nitrate
Write a balanced symbol equation for the reaction of zinc carbonate, ZnCO3 , with sulfuric acid. ZnCO3 + H2 SO4 → ZnSO4 + H2 O + CO2
Write a balanced symbol equation for the reaction of potassium hydroxide with sulfuric acid. 2KOH + H2 SO4 → K2 SO4 + 2H2 O
Write a balanced symbol equation for the reaction. Use M for the metal. M2 O3 + 3H2 SO4 → M2 (SO4 )3 + 3H2 O
Name the salt formed when potassium hydroxide reacts with hydrochloric acid. potassium chloride
Write the general word equation for the reaction between a metal carbonate and an acid. metal carbonate + acid → salt + water + carbon dioxide Sample questions Written for this site in the style of AQA exam questions. They are not taken from real past papers.
Question 1 Easy 4 marks
Acids react with bases, alkalis and carbonates to produce salts.
(a) Name the salt produced when sodium hydroxide reacts with nitric acid.[1]
(b) Name the salt produced when copper oxide reacts with sulfuric acid.[1]
(c) What are the products when calcium carbonate reacts with hydrochloric acid?one box.[1]
calcium chloride and water only calcium chloride, water and carbon dioxide calcium chloride and hydrogen calcium hydroxide and carbon dioxide (d) Which acid produces salts called chlorides?[1]
Show the answer and mark scheme (a) Answer: sodium nitrate
(b) Answer: copper sulfate
copper sulfate / copper(II) sulfate (c) Answer: calcium chloride, water and carbon dioxide
(d) Answer: hydrochloric acid
Question 2 Medium 5 marks
Metal oxides, metal hydroxides and metal carbonates all neutralise acids.
(a) What is the difference between a base and an alkali?[1]
(b) Write a balanced symbol equation for the reaction of zinc carbonate, ZnCO3 , with sulfuric acid.[2]
(c) Describe what you would see when green copper carbonate powder is added to dilute hydrochloric acid until no more reacts.[2]
Show the answer and mark scheme (a) an alkali is a base that dissolves in water / an alkali is a soluble base (e.g. a soluble metal hydroxide) (b) Answer: ZnCO
3 + H
2 SO
4 → ZnSO
4 + H
2 O + CO
2 products ZnSO4 and H2 O and CO2 ZnCO3 + H2 SO4 → ZnSO4 + H2 O + CO2 (all formulae correct) (c) fizzing / bubbles (of gas) the green solid disappears / dissolves (until some is left over at the end) the solution turns blue / blue-green Question 3 Hard 7 marks
The salt produced when an acid reacts depends on the acid used and on the positive ions in the base, alkali or carbonate.
(a) Write a balanced symbol equation, including state symbols, for the reaction of solid aluminium oxide, Al2 O3 , with hydrochloric acid.[3]
(b) Write a balanced symbol equation for the reaction of potassium hydroxide with sulfuric acid.[2]
(c) A student wants to make lithium nitrate.two different pairs of reactants the student could use.[2]
Show the answer and mark scheme (a) Answer: Al
2 O
3 (s) + 6HCl(aq) → 2AlCl
3 (aq) + 3H
2 O(l)
correct products AlCl3 and H2 O balanced: Al2 O3 + 6HCl → 2AlCl3 + 3H2 O state symbols (s), (aq), (aq), (l) (b) Answer: 2KOH + H
2 SO
4 → K
2 SO
4 + 2H
2 O
products K2 SO4 and H2 O balanced: 2KOH + H2 SO4 → K2 SO4 + 2H2 O (c) lithium hydroxide and nitric acid lithium carbonate and nitric acid / lithium oxide and nitric acid Related subtopics
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