Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Reacting acids with bases
19 practice questions
Practice questions
1–8 of 8 · Normal
Question 1
2 marks · Normal
Answer and see the solution →State the general word equation for the reaction between an acid and a metal oxide.
Question 2
4 marks · Normal
Answer and see the solution →Magnesium oxide reacts with hydrochloric acid in a beaker. Answer the following questions about this reaction.
(a)[1 mark]State the names of the products formed in this reaction.
(b)[2 marks]Write the balanced chemical equation for the reaction.
(c)[1 mark]Describe the visible change that could be seen during this reaction.
Question 3
3 marks · Normal
Answer and see the solution →Group 1 metal oxides behave differently from most other metal oxides when mixed with water.
Explain, using examples, which metal oxides form alkalis when dissolved in water.
Question 4
4 marks · Normal
Answer and see the solution →The table below lists the reactants in several experiments. Complete the table by stating the salt and water produced for each reaction between an acid and a metal oxide.
Reactions of acids with metal oxides Acid Metal oxide Salt formed Water formed? Sulfuric acid Copper(II) oxide Hydrochloric acid Iron(III) oxide Nitric acid Zinc oxide Question 5
1 mark · Normal
Answer and check →Which of the following equations shows the products formed when potassium hydroxide reacts with nitric acid?
- A.KOH(aq) + HNO3(aq) → KNO3(aq) + H2O(l)
- B.KOH(aq) + HNO3(aq) → KNO2(aq) + H2(g)
- C.KOH(aq) + HNO3(aq) → KOH(s) + HNO3(aq)
- D.KOH(aq) + HNO3(aq) → K2O(aq) + NO2(g)
Question 6
2 marks · Normal
Answer and see the solution →Explain why the reaction between an acid and a metal hydroxide is classified as a neutralisation reaction.
Question 7
4 marks · Normal
Answer and see the solution →Answer the following about soluble and insoluble metal oxides.
(a)[1 mark]Name one metal oxide that is soluble in water.
(b)[1 mark]Write the chemical equation for its reaction with water.
(c)[1 mark]State the product that makes the resulting solution an alkali.
(d)[1 mark]Explain why most other metal oxides do not form alkalis when mixed with water.
Question 8
3 marks · Normal
Answer and see the solution →Hydrochloric acid reacts with sodium hydroxide in a neutralisation reaction.
Explain, using what happens to the ions in this reaction, why this process is classified as a neutralisation reaction.