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
41–50 of 359 · Easy
Question 41
1 mark · Easy
Answer and see the solution →State whether bromine can displace iodine from potassium iodide solution. Give your answer as 'yes' or 'no'.
Question 42
3 marks · Easy
Answer and see the solution →The properties of the halogens are shown in the list below.
(a)[1 mark]Name the halogen that is a pale green gas at room temperature.
(b)[1 mark]State the colour of solid iodine.
(c)[1 mark]Describe the electrical conductivity of the halogens at room temperature.
Question 43
2 marks · Easy
Answer and see the solution →A sample contains equal volumes of chlorine and bromine at room temperature. Chlorine is a green gas and bromine is a red-brown liquid under these conditions. Calculate the total number of different physical states present in the sample, and state the color for each state.
Question 44
2 marks · Easy
Answer and see the solution →A student adds chlorine to a solution containing sodium bromide. The student starts with 0.100 mol of sodium bromide. After the reaction, all the bromide ions have reacted. Calculate the maximum number of moles of bromine that could be formed, and explain your reasoning.
Question 45
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 46
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 47
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 48
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 49
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 50
1 mark · Easy
Answer and see the solution →Complete the word equation for the reaction: potassium iodide + chlorine → ___ + ___