Predict whether the following reactions will be spontaneous in acidic solution under standard conditions: (a) Oxidation of

Question:

Predict whether the following reactions will be spontaneous in acidic solution under standard conditions:
(a) Oxidation of Sn to Sn2+ by I2 (to form I-)
(b) Reduction of Ni2+ to Ni by I- (to form I2)
(c) Reduction of Ce4+ to Ce3+ by H2O2
(d) Reduction of Cu2+ to Cu by Sn2+ (to form Sn4+).