Question

Method by which lyophobic sol can be produce/prepared/protect(confusion):

Answer 1

1) ferric sols forms lyophobic sols on treatment with water

2) lyophobic sols can be protected by adding lyophilic sols

Explanation:

1) ferric hydroxide sols is prepared by the hydrolysis of ferric chloride with boiling distilled water..the reaction is

FeCl3(aq) + 3H2O[l] = Fe(OH)2 [S]+ 3HCl(aq).

2)- as lyophobic sols are readily precipitated on addition of small amounts of electrolytes or shaking or heating , they are made stable by adding lyophilic sols which stabilises the lyophobic sols and hence protects them...

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