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
141–150 of 359 · Easy
Question 141
3 marks · Easy
Answer and see the solution →(a)[1 mark]A student adds a piece of zinc to dilute hydrochloric acid. State one observation she might make.
(b)[2 marks]What test could be used to confirm the identity of the gas produced? State the result.
Question 142
2 marks · Easy
Answer and see the solution →A student uses 0.35 g of magnesium in a reaction with excess dilute hydrochloric acid. (Relative atomic mass, Mg = 24)
Calculate the number of moles of magnesium used. Give your answer to two decimal places.
Question 143
2 marks · Easy
Answer and see the solution →Explain, with reasons, why copper does not react when added to dilute hydrochloric acid, but magnesium reacts vigorously.
Question 144
3 marks · Easy
Answer and see the solution →The table shows the maximum temperatures reached when equal moles of different metals react with excess dilute hydrochloric acid.
Temperature changes for reactions of metals with acid Metal Initial temperature / °C Maximum temperature / °C Aluminium 18 29 Zinc 18 23 Iron 18 20 Copper 18 18 (a)[1 mark]Calculate the temperature change for zinc.
(b)[1 mark]Which metal was the least reactive? Use data to support your answer.
(c)[1 mark]Explain why the reaction with aluminium may need to be warmed before it proceeds quickly.
Question 145
3 marks · Easy
Answer and see the solution →(a)[1 mark]Give the general word equation for the reaction between a metal and a dilute acid.
(b)[2 marks]Potassium cannot safely be reacted with dilute acids in the laboratory. Explain why.
Question 146
1 mark · Easy
Answer and see the solution →State one observation that would indicate a metal is more reactive when it reacts with dilute hydrochloric acid compared to another metal.
Question 147
2 marks · Easy
Answer and see the solution →A student reacts 0.010 mol of zinc powder with 50 cm³ of dilute hydrochloric acid. The initial temperature is 20 °C and the maximum temperature is 28 °C.
(a)[1 mark]Calculate the temperature rise during the reaction.
(b)[1 mark]Explain, using the data, which metal would be more reactive: zinc (temperature rise 8°C) or iron (temperature rise 4°C, same conditions).
Question 148
1 mark · Easy
Answer and see the solution →Rubidium is placed above potassium in the reactivity series. Would you expect rubidium to react more or less vigorously with water compared to potassium? State your answer.
Question 149
3 marks · Easy
Answer and see the solution →Calcium, lead and iron are placed in the following order in the reactivity series: calcium > iron > lead.
(a)[1 mark]Which of these three metals would you expect to react most quickly with dilute hydrochloric acid?
(b)[1 mark]Predict which of these metals would not react at all with cold water.
(c)[1 mark]Explain your answer to part b.
Question 150
2 marks · Easy
Answer and see the solution →A lump of nickel is placed in copper(II) sulfate solution. Explain what happens, using the reactivity series.