Question

How to do problem given of flocullating value and volume of sol?

Answer 1

The phenomenon of the precipitation of a colloidal solution by the addition of the excess of an electrolyte is called coagulation or flocculation.”
The coagulation of the lyophobic sols can be carried out by following methods.
(1) By electrophoresis: In electrophoresis the colloidal particles move towards oppositely charged electrode. When these come in contact with the electrode for long these are discharged and precipitated.
(2) By mixing two oppositely charged sols : When oppositely charged sols are mixed in almost equal proportions, their charges are neutralised..

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Answer 2

Answer:

In an experiment, addition of 4.0 mL of 0.005 M BaCl2 to 16.0 mL of arsenious sulphide sol just causes the complete coagulation in 2 h. The flocculating .