Why vacuum filtration is preferable to gravity filtration

We can find two types of filtration: gravity filtration and vacuum filtration. Gravity filtration is a common method to remove solid impurities from an organic liquid. The impurity is then filtered out during the hot gravity filtration process.

Hot gravity filtration requires an Erlenmeyer flask, a stemless funnel, filter paper, and a hot plate. The flask and the funnel need to be stabilized and held in place by clamps in order to prevent anything from tipping over. The filter paper is often folded into a fluted shape in order to prevent pressure from building up from the hot filtrate in the Erlenmeyer flask. The solution is heated on a hot plate and poured little-by-little into the filter-lined funnel.

Some solutions will crystallized immediately upon touching the room-temperature filter paper. This problem can be avoided by heating the whole assembly prior to pouring the hot solution into it.

Any crystals that form in the filter paper can be dissolved by adding a little solvent. This is also why a stemless funnel is used. Water molecules have a polar arrangement of the oxygen and hydrogen atoms—one side hydrogen has a positive electrical charge and the other side oxygen had a negative charge.

The first step of the dissolving process is the moving molecules of the solvents around the molecules of the solute once the solute is being placed. Therefore, it can be mixed with water. It does not technically dissolve; rather, it forms a homogeneous solution with water. Therefore, it is able to be mixed with water.

It does not technically dissolve; rather, it forms a homogenous solution with water. This happens because vinegar consists of water and acetic acid. The " filtrate " refers to the liquid that has passed through a filter paper as indicated in Figure 1. Gravity filtration is typically used when the filtrate is retained, while suction filtration is used when the solid is retained. Gravity filtration is preferred when the filtrate is retained as suction has the potential of pulling small solid particles through the filter paper pores, potentially producing a filtrate contaminated with the solid compound.