Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Reactivity Series
163 practice questions
Topics covered
- Displacement reactions involving metal oxides20 practice questions
- Oxidation and reduction19 practice questions
- Displacement reactions involving solutions of salts19 practice questions
- Reactions of metals with water18 practice questions
- Reactions of metals with dilute acids19 practice questions
- Making predictions using the reactivity series19 practice questions
- Preventing rusting by galvanising21 practice questions
- Preventing rusting by using sacrificial protection18 practice questions
Practice questions
81–90 of 163
Question 81
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 82
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 83
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 84
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 85
2 marks · Normal
Answer and see the solution →Describe two observations you could make when magnesium is added to dilute hydrochloric acid that show it is more reactive than iron.
Question 86
4 marks · Normal
Answer and see the solution →An experiment was carried out to compare the reactivity of metals with dilute hydrochloric acid. The results are:
Observations when metals react with hydrochloric acid Metal Observation Magnesium Rapid fizzing, test-tube gets hot, gas burns with a squeaky pop Zinc Steady fizzing, test-tube gets warm, gas burns with a squeaky pop Copper No reaction, no temperature change, no gas produced (a)[1 mark]Arrange the metals in order of decreasing reactivity according to the observations.
(b)[1 mark]Write a word equation for the reaction between magnesium and hydrochloric acid.
(c)[2 marks]State the name of the gas produced in these reactions and describe how it is tested.
Question 87
3 marks · Normal
Answer and see the solution →A student wants to compare the temperature changes when 0.010 mol of three different metals react with 50 cm³ of 1 mol/dm³ hydrochloric acid. She uses 0.24 g magnesium, 0.65 g zinc, and 0.56 g iron. Her results are:
Temperature data Metal Initial temp / °C Max temp / °C magnesium 20 41 zinc 20 28 iron 20 24 Question 88
3 marks · Normal
Answer and see the solution →Explain why it is important to use the same number of moles of metal in each experiment when comparing their reactivity with dilute hydrochloric acid.
Question 89
4 marks · Normal
Answer and see the solution →The results of an experiment measuring the temperature rise when four metals react with excess hydrochloric acid are shown in the bar chart below.
Temperature rise for metals with hydrochloric acid (a)[1 mark]Which metal is the most reactive according to the results? Give evidence from the chart.
(b)[1 mark]Which metal does not react at all with hydrochloric acid?
(c)[2 marks]Describe the trend in reactivity shown by these four metals.
Question 90
1 mark · Normal
Answer and check →Which of the following metals will not react with dilute hydrochloric acid?
- A.Magnesium
- B.Zinc
- C.Iron
- D.Silver