Physical Chemistry Solutions Ideal solutions A solution where the molecules of the various species are so simiar to one another that replacing molecules of one species with molecules of another species will not change the spatial structureor the intermolecular interaction energy in the solution To prevent change on mixing B Bat t, i Ca, B-B, C-C and C, the size and shape of B P P molecules= those ofc The intermolecular interaction B+c B-B. C-C energies should be essentially the same for B-B. B-C. and c atT. P B-C pairs of moleculesIdeal Solutions Solutions A solution where the molecules of the various species are so similar to one another that replacing molecules of one species with molecules of another species will not change the spatial structure or the intermolecular interaction energyin the solution. B at T, P C at T, P B + C at T, P B-B, C-C B-B, C-C, B-C To prevent change on mixing B and C, the size and shape of B molecules  those of C The intermolecular interaction energies should be essentially the same for B-B, B-C, and C￾C pairs of molecules. Physical Chemistry