Alcohol, Phenol and EtherHard

Question

The protecting power of lyophilic colloidal sol is expressed in term of

Options

A.coagulation value
B.gold number
C.critical micelle concentration
D.oxidation number

Solution

Lyophilic sols are unstable, so they are stabilised by adding some lyophilic colloids which protect them from precipitation Thus, lyophilic colloids are called protecting colloids. Their protecting power is expressed in terms of gold number.
Note Lesser the gold number, Higher is the protecting power.

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