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
91–100 of 869
Question 91
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 92
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 93
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 94
2 marks · Normal
Answer and see the solution →State the physical state and colour of chlorine and iodine at room temperature.
Question 95
4 marks · Normal
Answer and see the solution →This question is about the reactivity and displacement reactions of the halogens.
(a)[1 mark]Write a balanced equation for the reaction of chlorine with potassium bromide solution.
(b)[2 marks]Explain why this reaction happens.
(c)[1 mark]Name the type of reaction taking place in part (a).
Question 96
3 marks · Normal
Answer and see the solution →Explain, in terms of group trends, why iodine does not displace chlorine from a solution of sodium chloride. Include reference to reactivity and position in the group.
Question 97
4 marks · Normal
Answer and see the solution →The table below shows the appearance of three halogens at room temperature. Some data is missing. Complete the table.
Appearance of halogens at room temperature Halogen Physical state Colour Chlorine green Bromine red-brown Iodine Write your answers for the missing physical states and colour.
Question 98
1 mark · Normal
Answer and check →Which statement correctly explains why potassium iodide reacts with chlorine water?
- A.Chlorine is less reactive than iodine, so it is displaced by iodine.
- B.Iodine is more reactive than chlorine, so it displaces chlorine from the solution.
- C.Chlorine is more reactive than iodine, so it displaces iodine from potassium iodide.
- D.Iodine forms a stronger bond with potassium, so it replaces chlorine.
Question 99
2 marks · Normal
Answer and see the solution →State the colour change you would observe when chlorine gas is bubbled through a solution of potassium iodide.
Question 100
3 marks · Normal
Answer and see the solution →The melting and boiling points of the halogens increase down the group.
Chlorine is a gas at room temperature (25 B0C) and boils at 76 B0C. Bromine is a liquid at room temperature and boils at 59 B0C. Iodine is a solid at room temperature and sublimes at 84 B0C.
(a)[2 marks]Use the information above to state the physical state (solid, liquid or gas) of each halogen at room temperature (7F25 B0C).
(b)[1 mark]Explain, using the relative molecular mass and forces present, why the melting and boiling points increase from chlorine to iodine.