Question

why Lyophilic sols are called reversible sols ?​

Answer 1

Explanation:

Reversible, because on evaporating the liquid, the residue left will passes into colloidal state on addition of liquid. Lyophobic : Irreversible, because on evaporating the liquid, the residue left cannot be converted into solution on mere addition of liquid.

Answer 2

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In the lyophilic colloids if the dispersed medium is separated from the dispersion medium the sol can be made again by simply remixing with the dispersion medium. So they are called reversible sols!

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