When a liquid's freezing point is lowered or lowered by the addition of another component, freezing point depression occurs.
What is freezing point depression?
This will probably be the case for every issue you run into in this course involving freezing point depression as well as boiling point elevation, but it's a good idea to watch out for ions. It is important to note that both nonvolatile and volatile solutions can be modelled by these equations. This implies that the vapour pressure has no bearing on the change in temperature for the purpose of determining the freezing point depression as well as boiling point elevation. Additionally, keep in mind that a pure solvent is indeed a solution that hasn't had anything else dissolved or added to it. We'll contrast the solvent's original properties with those it acquires after being mixed with a solution.
ΔTf= Kf · b · i
ΔTf =freezing-point depression
Kf =cryoscopic constant
b =molality
i =van 't Hoff factor
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