(iii) For the experiment described in (ii), sketch the current potential plot that you would expect to observe when the concentrations of Cu and Zn are equal. (iv) Considering the system described in (ii). If the potential was now cycled in the opposite direction, from -1.0 V to 1.0 V, what would you expect to observe? Provide an explanation to support your answer. [4 marks (4 marks