Reverse phenomenon of electroosmosis causes arise of flow potential known as
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Electroosmosis : The migration of a dispersion medium from a colloidal solution under the influence of an electric field is called electroosmosis.
In this a U shaped tube divided in two parts by inserting a membrane at the centre is used. One arm is filled with a colloidal solution and another arm with dispersion medium and two electrodes are introduced in two arms. When electric potential is applied, dispersed phase particles remain stationary while dispersion medium from colloidal sol migrates towards the electrode with a charge opposite to charge on colloidal particles.
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