BRAINCAKESolubility of Simple Molecules
Polar covalent molecules may dissolve in polar solvents. Not all polar covalent molecules will be soluble in polar solvents.
Non-polar covalent molecules will form intermolecular forces with the molecules of non-polar solvents. The energy released may be enough to break the intermolecular forces between the non-polar covalent molecules so non-polar covalent molecules tend to be soluble in non-polar solvents.
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Key terms in this lesson
- London forces
- Weak intermolecular forces caused by an instantaneous dipole inducing a dipole in a neighbouring molecule.
- Hydrogen bond
- A strong permanent dipole-dipole interaction between a hydrogen atom bonded to N, O or F and a lone pair on an electronegative N, O or F atom of another molecule.
- Group
- A vertical column of the periodic table, containing elements with the same number of outer-shell electrons.
More in Shapes and Intermolecular Forces
- More examples.
- Electronegativity
- Bond Polarity
- Polar Solvents and Solubility
- Induced Dipole-Dipole Interactions (London Forces)
- Permanent dipole-dipole interactions
- Hydrogen Bonds
- Boiling Points of Hydrides and Intermolecular forces
All 13 lessons in Shapes and Intermolecular Forces · All OCR AS-level Chemistry topics