Question
Distinguish between ideal and non-ideal solutions.
| Ideal solutions | Nonideal solutions | |
| 1. | Ideal solutions obey Raoult’s law over entire range of concentrations. | Nonideal solutions do not obey Raoult’s law over the entire range of concentrations. |
| 2. | The vapour pressure of ideal solution always lies between vapour pressures of pure components. | The vapour pressures of these solutions can be higher or lower than those of pure components. |
| 3. | Solvent-solute, solute-solute and solvent-solvent molecular interactions are comparable. | Solute-solvent intermolecular attractions may be weaker or stronger than those between solute-solute molecules and solvent-solvent molecules. |
| 4. | e.g. Benzene + toluene | e.g. Ethanol + acetone Carbon disulphide + acetone Phenol + aniline Chloroform + acetone |
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