Quantitative precipitation
Since a precipitate is a solid it can be collected by filtering. The precipitate is left behind on the filter paper as residue which can be washed by pouring water over it when it is still in the funnel.
Watch this video for a demonstration of how to separate an insoluble solid from a liquid by filtration.
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The precipitate can be dried in an oven then its mass can be measured. When we know the mass of precipitate made, we can work out information about the quantity of reactants present at the start.
This is a type of Used to find out how much of a substance is in a sample. These tests produce numbers in their results. An example of this type of analysis is a titration. since it produces numerical results.