(a) When a freshly prepared precipitate of Fe(OH)3 is shaken with a small amount of FeCl3 solution, peptization occurs by converting the Fe(OH)3 precipitate into colloidal solution of positively charged Fe(OH)3.
(b) On persistent dialysis, the electrolyte present are completely removed resulting in the coagulation of the colloidal solution.
(c) on centrifugation, an emulsion gets separated into its constituent liquids.
