Question 8:Corrosion is an electrochemical phenomenon. The oxygen in moist air reacts as follows: O2(g) + 2H2O(l) + 4e– → 4OH–(aq). The correct answer is -Anode: Zn (s) Zn2+ (aq) + 2 e- (1/2) Cathode: O2(g) + 2H2O(l) + 4e– → 4OH–(aq). Overall: 2 Zn (s) + O2(g) + 2H2O(l) 2 Zn2+ (aq) + 4OH–(aq) 2 Zn (s) + O2(g) + 2H2O(l) 2 Zn(OH)2 (ppt)
