88. Solving a chemistry problem
307. During the electrolysis of a solution of CuSO4 at the anode, 420 ml of gas, measured under normal conditions, were released. Compose the electronic equations of the processes occurring on the electrodes during the electrolysis of CuSO4, if the anode is carbon and the cathode is copper. Calculate the amount of substance released at the cathode. Answer: 2.4 g.
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