IB Chemistry SL 2.2.8 Intermolecular forces (IMF)
IB Chemistry SL 2.2.8 Intermolecular forces (IMF)

IB Chemistry syllabusFirst assessment 2025
Learn to explain boiling-point trends with London forces and place hydrogen bonds correctly in molecules and polymers without drawing forbidden links.
How this is tested
- explain higher boiling points in the first four alkenes by stronger London forces as size rises
- nH3 has a higher boiling point than PH3 because ammonia forms hydrogen bonds
- place a dotted H bond correctly, e.g. between H2SO4 and H2O or C=O and H-N in nylon 6,6
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