When electroplating copper with a current of 20A in an electrolyte containing 1.0M Cu+ ions, calculate the voltage required for plating under the following conditions.

(a) In case of Cu+/Cu redox pair in sulfuric acid electrolyte, E0'=522mV (vs.NHE), i0=1.0A, absolute value of slope in Tafel city is (120mV)-1

(b) By adding 5.0M of CN- to the above sulfuric acid electrolyte, copper ions exist in the form of Cu(CN)43- (formation constant of complex formation is 1020), i0=0.1A, of Tafel slope When the absolute value is (120mV)-1