Properties of Colloidal Solutions
Properties of Colloidal Solutions: Overview
This topic covers concepts, such as, Properties of Colloidal Solutions, Size of Colloidal Particles, Electrophoresis & Electro-osmosis etc.
Important Questions on Properties of Colloidal Solutions
Choose the option that is depicting the correct match:
(i) KCl, an electrolyte, is added to hydrated ferric oxide sol a) Tyndall effect
(ii) an electric current is passed through a colloidal solution b) electrophoresis
(iii) a beam of light is passed through a colloidal solution. c) mutual coagulation
Among the electrolytes the most effective coagulating agent for sol is:
Explain the following observations :
(i) A beam of light passing through a colloidal solution has a visible path.
(ii) Passing an electric current through a colloidal solution removes colloidal particles from it.
(iii) Ferric hydroxide Sol coagulates on addition of potassium sulphate.
What are the properties of a colloidal solution?
Removal of soluble ionic imparity by using semi-permeable membrane is known as _____.
The persistent dialysis of colloidal solution which affect _____.
How does coagulation carried out by persistent dialysis?
Give an example where Tyndall effect is observed.
Mention the two necessary conditions required for the observation of Faraday's--Tyndall effect.
How coagulation can be carried out by mixing two oppositely charged sols?
Describe briefly any three methods by which coagulation of lyophobic sols can be carried out.
Describe any two methods of coagulation.
Viscosity of lyophilic colloidal solution is same as that of dispersion medium.
Which is the following is/are correct for lyophilic sols?
Coagulation can be done by electrophoresis. Define electrokinetic potential.
How does the precipitation of the colloidal solution carried out?
The electrophoresis is used for the coagulation of Sol particles.
The effect of electrolytes on the coagulation of colloidal solution is explained by _____ rule.
When milk is cooled, the protein particles coagulate and start floating on the surface.
Which particles float on the surface, when milk is cooled?
