Which expression(s) are incorrectly defined? I- Ohmic potential is the voltage that overcomes its electrical resistance in an electrochemical cell while current is flowing. II-

Which expression(s) are incorrectly defined? I- Ohmic potential is the voltage that overcomes its electrical resistance in an electrochemical cell while current is flowing. II- Concentration polarization occurs when the concentrations of reactants or products on the electrode surface are greater than that in the whole solution. III- Overvoltage is only the voltage required to overcome the activation energy of the reaction at the cathode. cathode only. IV- E = E katode – E anode – IR – overvoltage – concentration polarization A.II and IV B. I and II C. I, II and III D. II, III and IV

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