Chlorine, bromine, and iodine all react with heated aluminium foil. Table 1 shows the speed of these reactions.
Table 1
| Halogen | Speed of reaction with heated aluminium |
|---|---|
| Chlorine | Reacts very rapidly |
| Bromine | Reacts rapidly |
| Iodine | Reacts slowly |
When aluminium foil is heated with iodine, aluminium iodide is formed.
Write the word equation for this reaction.
106 exam-style questions on Edexcel GCSE Chemistry 7.2 Group 7, covering 7.2.1 Physical properties of the halogens, 7.2.2 Reactions of the halogens, 7.2.3 Relative reactivity and displacement reactions of the halogens, and 7.2.4 Halogen displacement as a redox reaction. Each one has a worked solution and a mark scheme showing where the marks go.