Question

What would likely happen if a hot saturated solution were filtered by vacuum filtration using a büchner funnel? (hint: the mixture will cool as it comes in contact with the büchner funnel.)?

Answer 1

The saturated HOT solution is filtered it then rapidly cools due to evaporation under vacuum. When it cools, the solution becomes supersaturated and usually precipitates since it cools too rapidly to crystallize nicely. As it precipitates, it clogs usually the funnel. Worse yet as when clogs the filter, our solution sits in the top of the funnel stuck