In this video explains ABNormal Molar Masses Colligate properties are shown by dilute solution. Dilute solution obey ideal behavior because of less intermolecular forces in the solvent. But in non-ideal solution intermolecular forces are considerable and routs law is deviated. If I mole of NaCl is distorted in water the increase in B.P(Boiling point) is 0.52k with mol.wf of NaCl is 58.5 but actual increase in B.P is 1.04 this is due to dissociations of NaCl into 2 model of and also molecular weight with result in 28.25. Similarly some solution when dissolved in solvents may associate to form dimes or polymer. The number of solute particular decreases molar masses of solute determined from such solutions will be higher than the true molar mass.

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