11589 12 Two standard electrode potentials are given below: (a) half-cell E  /V Zn2+(aq)  +  2e− ?  Zn -0.76 Cu2+(aq)  +  2e− ?  Cu +0.34 (i) Define standard electrode potential. [2] (ii) When the two half-cells are connected zinc will reduce Cu2+ ions to Cu atoms. Write the equation for the reaction. [2] (iii) Calculate the emf for this cell. [1] z 11589 [Turn over (b) Describe how you would set up a standard hydrogen electrode and use it to measure the electrode potential for a half-cell. In this question you will be assessed on using your written communication skills including the use of specialist scientific terms. [6]