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What is the difference between the boiling point elevation and the freezing point depression?
Wiki User
∙ 13y ago
Vapor pressure is a measure of how easily something evaporates. Therefore, if something has a high vapor pressure, it's likely to have a low boiling point. If it has a low vapour pressure, it's likely to have a high boiling point.
For the same reason, if something has a high vapor pressure, it's likely to have a low freezing point, as some of it is still likely to be evaporating as a gas, rather than being a liquid at relatively cold temperatures, so it needs to be even colder to freeze as a solid.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoBoiling point elevation is the raising of the temperature of a liquid's boiling point. Freezing point depression is lowering the freezing point of a liquid. These points can be changed by adding a solute (usually salts) to the pure solvent to create a solution. Equations to calculate change in temperature are (change in temp)freezing= i(van't Hoff factor) x Kf x m(molality) and (change in temp)boiling=i(van't Hoff factor) x Kb x m(molality) where Kf and Kb are constants.
Wikipedia has these both defined, and goes into further depth about both.
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