Vapour pressure of solutions: Raoult's law
Solutions · Chemistry
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Study notes
Water (H₂O) is bent: the two O–H bonds make an angle of 104.5°, not 180°, because oxygen's two lone pairs squeeze the bonding pairs together (VSEPR theory). Methane (CH₄) is tetrahedral with 109.5° between every pair of C–H bonds — the angle that keeps four electron pairs as far apart as possible. Switch molecules in the viewer above and compare their shapes.
Related topics
- Types of solutions and concentration terms
- Ideal and non-ideal solutions
- Azeotropes
- Colligative properties: relative lowering of vapour pressure, elevation of boiling point, depression of freezing point, osmotic pressure
- van't Hoff factor and abnormal molar mass
- Solubility of gases in liquids: Henry's law