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.

Question

Quizplus · Accepted Answer

The Answer of 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.

O2(g)+ 4 H+(aq)+ 4 E-→ 2 H2O(l)E° = +1

O₂(g)+ 4 H⁺(aq)+ 4 E^-→ 2 H₂O(l)E° = +1