IB Chemistry 3.1.4 Group trends Questions
IB Chemistry 3.1.4 Group trends Questions
Practise group-trend questions that ask you to predict displacement reactions, justify halogen reactivity and match equations to colour changes in solution.
How this is tested
- write halogen displacement equations, e.g. Cl2 + 2Br- -> 2Cl- + Br2 in aqueous solution
- state the bromine water + iodide colour change: yellow/orange to red/brown as I2 forms
- explain why Br2 does not oxidize Cl-: bromine is the weaker oxidizing agent than chlorine