Question

What happens when
(a) a freshly prepared precipitate of $Fe(OH{)}_3$ is shaken with a small amount of $FeC{l}_3$ solution?

(b) persistent dialysis of a colloidal solution is carried out?

(c) an emulsion is centrifuged?

Answer 1

(a) Peptisation takes place and colloidal solution of $Fe(OH{)}_3$ is formed

(b) Coagulation takes place

(c) De-emulsification takes place