Copper is electrolyzed from a 0.200M Cu(II) solution buffered at pH=4.00. Oxygen is released at the anode at a pressure of 740.0 torr. Cell resistance is 3.60Ω, temperature 25.0°C. Calculate a) the initial voltage required for electrolysis, b) Eohm when a current of 0.100A flows through the cell, c) the required electrolysis voltage when Eohm and the 0.500V overpotential of oxygen at the anode are taken into account and d) the required electrolysis voltage when the copper concentration has decreased [Cu2+]=8.00 ∙10-6M and the ohmic potential and overpotential remain unchanged.

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