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Explain electrodialysis. |
Answer» Solution :(i) The presence of electric field increases the speed of removal of electrolytes from COLLOIDAL solution. (II) The colloidal solution containing an electrolyte as IMPURITY is placed between two dialysing membranes enclosed into two compartments filled with water. (iii) When current is PASSED, the impurities pass into water compartment and get removed periodically. (iv) This process is faster then dialysis, as the rate of diffusion of electrolytes is increased by the application of electricity. 
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