Describe vapour pressure lowering and boiling point elevation
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When a non-volatile solute is added to a solvent, the vapour pressure of the resulting solution is lower than that of the pure solvent. Therefore, a greater amount of heat must be supplied to the solution for it to boil. This increase in the boiling point of the solution is the boiling point elevation.
Solvent: Kb value (in oC.kg.mol-1)
Water: 0.512
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