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Describe the purification of colloidal s...

Describe the purification of colloidal solution by the phenomenon of dialysis with a neat diagram.

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Dialysis is a process of removing a dissolved substance from a colloidal solution using a suitable membrane. The apparatus used for this purpose is called dialyser.A bag of suitable membrane.containing the colloidal solution is suspended in a vessel containing a continous flow of water. The bag made with animal membrane, or parchment paper or cellophane sheet allow-the molecules or ions to diffuse through it into the water and pure colloidal solution is left .behind in the bag.
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