Question

If an electric field is applied to a colloidal sol, the dispersed phase particles are found to move towards the electrode of opposite charge. If however, the dispersed phase is made stationary, the dispersion medium is found to move in the opposite direction. What is the term used for such movement of dispersion medium ?

Answer 1

When the dispersion phase is made stationary, the dispersion medium is found to move in the opposite direction, the phenomena is termed as electroosmosis.