BRAINCAKESolvents
Non-polar substances mostly dissolve in non-polar solvents and ionic or polar substances dissolve in polar solvents such as water.
When ionic solids dissolve in water, the lattice breaks down and water molecules form ion-dipole bonds with the ions. If an ionic compound is soluble, the enthalpy of hydration is enough to provide the energy needed to dissociate the ionic lattice.
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Key terms in this lesson
- hydrogen bond
- A strong dipole attraction between a lone pair on a highly electronegative N, O or F atom and an H atom bonded to N, O or F.
- miscible
- Able to mix completely with another liquid in all proportions to form a single solution.
More in Discrete Molecules
- Permanent Dipoles
- Hydrogen Bonds
- Intermolecular Forces and Boiling Points
- Anomalous Properties of Water
- Dissolving Ionic Solids
- Metallic Lattices
- Giant Ionic Lattices
- Giant Covalent Lattices
All 25 lessons in Discrete Molecules · All Edexcel AS-level Chemistry topics