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Explain Electrophoresis. |
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Answer» SOLUTION :The existence of charge on colloidal particles is confirmed by electrophoresis experiment. When electric potential is applied ACROSS two platinum electrodes DIPPING in a colloidal solution the colloidal particles move towards one or the other electrodes. The movement of colloidal particles under an applied electric potential is called electrophoresis. Positively charged particles move towards the cathode while negatively charged particles move towards the anode. This can be demonstrated by the following experimental set up. (See figure)  When electrophoresis i.e. movement of particles is PREVENTED by some suitable, means it is observed that the dispersion medium beging to move in an electric field. This PHENOMENON is termed electroosmosis. |
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