Ideal Solutions Chemistry Notes

Ideal Solutions Chemistry Notes

→ Those solutions which obey Raoult’s law at all ranges of temperature and concentration are called ideal solutions. An ideal solution of components A and B will satisfy the following conditions: (1) It obeys Raoult’s law i.e,

Ideal Solutions Chemistry Notes 1

Ideal Solutions Chemistry Notes 2

→ The volume of solution on mixing both components should be equal to volume of two components. i.e.,
∆V(mixing) = 0

→ There is no change in enthalpy on mixing both components.i.e.
∆H(mixing) = 0

→ The intermolecular forces of attraction between A – B in solution should be equal to intermolecular forces of attraction present in components (i.e, between A – A and B – B). Solute and solvent having same physical and chemical properties form ideal solution.

Ideal Solutions Chemistry Notes

Examples :

  • Benzene + Toluene (Aromatic hydrocarbons)
  • n – Hexane + n-Heptane (Alkanes)
  • Chlorobenzene + Bromobenzene (Aryl holides)
  • Carbon tetrachloride (CCl4) + Silicon tetrachloride (SiCl4) (Chlorides of group 14)
  • Ethylene chloride + Ethylene bromide (Alkyl halides)
  • Ethyl bromide + Ethyl iodide (Alkyl halides)
  • Methanol + Ethanol (Alcohols)
  • 1 – Chlorobutane +1-Bromobutane (Alkyl halides)

Chemistry Notes