3.2.3Inorganic chemistry
Group 7(17), the Halogens
Trends down the group, displacement and halide reactions, halide tests and water treatment.
- Year 1 (AS)
- 3 lessons
- Exam practice and flashcards
- LESSON 1Trends in Group 7 Properties
Trends in electronegativity, boiling points, reactivity, and oxidising ability of halogens, and the reducing ability of halide ions.
- LESSON 2Halogen Displacement and Reactions with Halides
Displacement reactions in aqueous solution and reactions of halide ions with concentrated sulfuric acid to show trends in redox power.
- LESSON 3Tests for Halide Ions and Water Treatment
Testing for halide ions using silver nitrate and ammonia, and the chemistry, benefits, and risks of chlorine in water treatment.