electrolysis & redox

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Created by
Dion

Cards (1)

    • transfer of electrons - OILRIG
    • As ions come into contact w electrode, electrons lost / gained -> neutral substances discharged as products @ electrodes
    • anode: -ve charged ions lose electrons (oxidised)
    • cathode: +ve gain electrons (reduced)
    • half equations:
    • cathode: Pb2+ +2e- -> Pb (reduction)
    • anode: 2Br- -> Br2 + 2e- (oxidation)
    • cathode: 2H+ +2e- -> H2 (NaCl)
    • anode: 2Cl- -> Cl2 + 2e-
    • cathode: 2H+ +2e- -> H2 (H2SO4)
    • anode: 2H2O -> O2 + 2H+ + 2e-
    • cathode: Cu2+ +2e- -> Cu (CuSo4)
    • anode: 4OH- -> O2 + 2H2O + 4e-