For the exercise in this topic, base your answers on the potentials listed in Table 6M.1 or Appendix 2B, with the exception of the reduction and oxidation of water at pH = 7:A 1.0 m NiSO₄(aq) solution was electrolyzed by using inert electrodes. Write 

(a) The cathode reaction; 

(b) The anode reaction. 

(c) With no overpotential at the electrodes, what is the minimum potential that must be supplied to the cell for the onset of electrolysis?

Transcribed Image Text:

2 H₂O(1) + 2 e →H₂(g) + 2OH¯ (aq), E = O₂(g) + 4 H (aq) + 4e¯ 2 H₂O (1), E = -0.42 V at pH = 7 +0.82 V at pH = 7