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Question
O2(g) + 4 H+(aq) + 4 e--> 2 H2O(l) E = +1.23 V
I2(s) + 2 e- -> 2 I-(aq) E = +0.54 V
2 H2O(l) + 2 e- -> H2(g) + 2 OH-(aq) E = -0.83 V
Mg2+(aq) + 2 e- -> Mg(s) E = -2.37 V
Based on the data above, electrolysis of an aqueous solution of MgI2, with inert electrodes, is expected to produce
A) Mg at the cathode and I2 at the anode.
B) H2 at the cathode and I2 at the anode.
C) Mg at the cathode and O2 at the anode.
D) H2 at the cathode and O2 at the anode.
Answer
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