Video Transcript
The given diagram shows the experimental apparatus for filtration. What is the name of the solid that remains in the filter paper? What is the name of the liquid that passes through the filter paper?
This diagram shows the experimental setup for filtration, or more specifically known as gravity filtration, which is a separation technique used to separate an insoluble solid from a liquid. This type of filtration is preferred in cases where there is a large amount of mixture to separate and the mixture needs to be filtered while it is hot. An everyday example of gravity filtration is using a coffee maker to make coffee by adding hot water to ground coffee beans followed by filtering the coffee from the ground coffee beans and water mixture.
In this process, the coffee or the liquid passes through the filter paper, leaving the ground coffee beans or the insoluble solid in the filter paper. In terms of performing gravity filtration in a laboratory setting, a mixture of an insoluble solid and a liquid is poured over a fluted, porous piece of filter paper, where the liquid and any soluble components will pass through the filter paper, leaving the insoluble solid behind in the filter paper.
Once the liquid has passed through the filter paper and is collected in the Erlenmeyer flask, it is called the filtrate, while the insoluble solid that did not pass through the filter paper is called the residue. Therefore, the solid that remains on the filter paper is called the residue, and the liquid that passes through the filter paper is called the filtrate.
