Two half-reaction equations and their standard reduction potentials are given below.
2ClO3ā» (aq) + 12Hāŗ (aq) + 10eā» ā Cl2 (g) + 6H2O (l) E°red = +1.47 V
S2O8²⻠(aq) + 2eā» ā 2SO4²⻠(aq) E°red = +2.01 V
i. Write a balanced equation for the overall cell reaction.
ii. Calculate the standard cell potential, E°cell.
iii. Find the change in Gibbs free energy, ĪG° at 298 K.
iv. Explain whether the reaction in part (iii) is spontaneous or not.