How are you going to separate a liquid from an insoluble solid?
Today's blog post is about separation techniques.
Filtration
This method is used to separate a suspension into its components - the liquid and the insoluble solid. The use of the filter allows the filtrate (liquid) to pass through and retains the insoluble solid particles (residue).
Crystallisation
This method is used to separate a solution into its components - the liquid and the solute (dissolved solid). The solute is obtained in the form of pure crystals. Crystallisation can either be carried out through the rapid cooling of a saturated solution or the slow evaporation of a solution at room temperature.
Sublimation
This method refers to the direct state change of solid to gaseous state without passing through the liquid state. This method is used to separate a mixture of solids, one of which sublimes. It may be used to obtain a pure sample of the solid which sublimes.
Magnetic separation
This method is used to separate a magnetic material from a mixture containing other non-magnetic materials. A strong magnet is held near the mixture, allowing it to attract magnetic substances while leaving a residue of non-magnetic materials.
Distillation
This method is for the separation and purification of liquids based on the differences in boiling points or volatility of the liquids.
The two main methods of distillation are:
Simple distillation, which is used to separate a pure liquid (solvent) from a solution containing dissolved solids.
Fractional distillation, which is used to separate mixtures of miscible liquids, which have widely different boiling points.
Separating funnel
This method is used to separate immiscible liquids.
Chromatography
This method is used to separate and identify small amounts of substances that are dissolved in solvents, to to determine if a sample is pure.
Thank you for watching. Videos from youtube and pictures from google.
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