Question

Which of the following helps in flocculation of lyophobic colloids?

By adding opposite charge electrolyte

Electrophoresis

Continuous dialysis

All of these​

Answer 1

Answer:

By adding opposite charge electrolyte

Answer 2

By adding opposite charge electrolyte helps in flocculation of lyophobic colloid

Explanation:

1.Lyophobic sols are those sols in which the particles of the dispersed phase have little affinity for the particles of the dispersion medium. Example: sols of metal and their sulphides and hydroxides.

2.The coagulation of a lyophobic colloidal solution can be achieved by mixing two oppositely charged sols. Coagulation or Flocculation or Precipitation

3.“The phenomenon of the precipitation of a colloidal solution by the addition of the excess of an electrolyte is called coagulation or flocculation.”.