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 374 · Normal
Question 281
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 282
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 283
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 284
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 285
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 286
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.
Question 287
2 marks · Normal
Answer and see the solution →State the general word equation for the reaction of an acid with a carbonate.
Question 288
4 marks · Normal
Answer and see the solution →(a)[2 marks]Write a balanced chemical equation for the reaction between calcium carbonate and nitric acid.
(b)[2 marks]Write a balanced chemical equation for the reaction between magnesium carbonate and sulfuric acid.
Question 289
3 marks · Normal
Answer and see the solution →Explain, with reference to ions, why carbon dioxide and water are formed when a carbonate reacts with an acid. Write the ionic equation for this reaction.
Question 290
4 marks · Normal
Answer and see the solution →Observations from adding dilute acids to metal carbonates Carbonate Acid used Colour before Colour after Gas formed Other changes Copper(II) carbonate sulfuric acid green blue yes solution forms Sodium carbonate hydrochloric acid white colourless yes solution forms Calcium carbonate nitric acid white colourless yes solid disappears Use the table above.
State the general word equation for the reaction between an acid and a carbonate, based on the observations.