IB Chemistry HL 3.1.4 Group trends and redox prediction Question Bank
Practise IB Chemistry HL 3.1.4 by analysing group trends, displacement evidence and redox reactions.
- Syllabus
- First assessment 2025
- Course
- Chemistry HL
- Level
- HL
Exam points
- Use experimental displacement results to rank metals and predict an untested reaction.
- Link group trends to oxidation, reduction and the relative stability of ions or compounds.
- Deduce and balance a redox equation while explaining why the trend supports it.
3.1.4—Group trends question 1
[Maximum number: 1]
Bleaches in which chlorine is the active ingredient are the most common, although some environmental groups have concerns about their use.
Describe the colour change that occurs when aqueous chlorine is added to aqueous sodium bromide.
from (pale) green/colourless to yellow/orange/brown;
Initial colour must be stated
Marking guidance:
Do not accept "clear/transparent" instead of "colourless".
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