Question

Define Reversible sols.

Answer 1

Reversible sols are lyophillic colloids, which is a type of colloid. ... If the dispersion medium is separated from the dispersed phase, the sol can be reconstituted by simple mixing with the dispersion medium. Hence these are called reversible sols.

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Answer 2

Reversible sols are sols which can be reformed if they are precipitated by simple mixing.

Explanation:

Lyophilic sols or reversible sols are formed directly by mixing of dispersed phase and dispersion medium. They are quite stable and thus cannot be coagulated easily. They can be reformed if they are precipitated by simple mixing.

Lyophobic sols or irreversible sols can only be formed by special methods and cannot be directly prepared. They are easily precipitated by addition of small amount of electrolyte. They can not be reformed if they are precipitated by simple mixing.

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