Give any one example of positive and negative deviation
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Examples of Positive Deviation
Carbon Tetrachloride and Toluene or Chloroform. Methyl Alcohol and Water. Acetone and Ethanol. Ethanol and Water.
Examples of negative Deviation
If the solute A-A bond and solvent B-B is weaker than A-B bond i.e. solute and solvent are tightly bound to each other as they are to themselves, then the solution will show a negative deviation from Raoult's law because the solvent molecules will not find it easier to escape from solution into the gas phase.
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