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
101–110 of 869
Question 101
4 marks · Normal
Answer and see the solution →The halogens react with metals and can also displace each other from solutions of their salts.
(a)[1 mark]State what is meant by a displacement reaction involving the halogens.
(b)[1 mark]Write a word equation for the reaction between bromine and potassium iodide solution.
(c)[2 marks]Explain why chlorine can displace bromine from sodium bromide solution, but iodine cannot.
Question 102
2 marks · Hard
Answer and see the solution →State the physical state and the colour of bromine at room temperature. Give one property of halogens that is the same for chlorine, bromine, and iodine.
Question 103
5 marks · Hard
Answer and see the solution →This question is about the reactivity of halogens and their displacement reactions.
(a)[1 mark]Write a balanced chemical equation for the reaction between bromine and potassium iodide solution.
(b)[2 marks]Explain why a reaction occurs between bromine and potassium iodide solution. Refer to the reactivity of the halogens in your answer.
(c)[1 mark]Describe what you would see during this reaction.
(d)[1 mark]Name the solution you would use to confirm the presence of iodine formed in this reaction. State the colour observed.
Question 104
2 marks · Hard
Answer and see the solution →A science teacher has three sealed containers, each holding one of the following halogens at room temperature (25°C):
(a)[1 mark]One container holds a halogen which is a red-brown liquid at room temperature. Name this halogen and state its physical state at room temperature.
(b)[1 mark]Another container holds a halogen that is a grey-black solid at room temperature. Name this halogen and state its colour at room temperature.
Question 105
1 mark · Easy
Answer and see the solution →State the colour change you would see when chlorine water is added to potassium bromide solution.
Question 106
3 marks · Easy
Answer and see the solution →(a)[1 mark]What is observed when bromine water is added to a solution of potassium iodide?
(b)[1 mark]Write the balanced chemical equation for the reaction.
(c)[1 mark]State why this reaction occurs, using the reactivity trend of the halogens.
Question 107
2 marks · Easy
Answer and see the solution →A student adds excess bromine water to 0.050 mol of potassium iodide solution. Calculate the maximum amount (in mol) of iodine that can be formed.
Question 108
2 marks · Easy
Answer and see the solution →Explain, using the reactivity trend, why chlorine can displace iodine from potassium iodide solution but iodine cannot displace chlorine from potassium chloride solution.
Question 109
3 marks · Easy
Answer and see the solution →A student added samples of chlorine, bromine and iodine solutions to three separate solutions of potassium chloride, potassium bromide and potassium iodide. The table shows her results:
Colour change observations for halogen displacement reactions Halogen solution added Potassium chloride Potassium bromide Potassium iodide Chlorine - orange brown Bromine - - brown Iodine - - - (a)[1 mark]Which solution gave a brown colour when iodine was present? Name the halogen displaced.
(b)[2 marks]Which is the most reactive halogen in this experiment? Explain your answer.
Question 110
1 mark · Easy
Answer and see the solution →Complete the word equation for the reaction: potassium iodide + chlorine → ___ + ___