26. Solving a chemistry problem

3. Write the equations for the reactions occurring on the electrodes during the electrolysis of an aqueous solution of cadmium sulfate a) with a graphite anode, b) with a cadmium anode. If a current of 134 A is passed through the solution for 2 hours, how will the amount of cadmium in the solution change in both cases, if the current efficiency of cadmium at the cathode is 80%, and at the anode - 100%