Homework Help: Chemistry ,Reactions at Electrodes during Electrol

Posted by Mahtab on Sunday, April 8, 2012 at 11:54pm.

Reactions at Electrodes during Electrolysis

Which half-reaction will take place at the cathode during the electrolysis of molten MgCl2?
2Cl- > Cl2 + 2e-
Cl2 + 2e- > 2Cl-
Mg2+ + 2e- > Mg
Mg > Mg2+ + 2e-
Which half-reaction will take place at the cathode during the electrolysis of 0.10M aqueous KF solution
2F- > F2 + 2e-
F2 + 2e- > 2F-
2H2O + 2e- > H2 + 2OH-
2H2O > O2 + 4H+ + 4e-
Which half-reaction will take place at the anode during the electrolysis of molten MgCl2?
2Cl- > Cl2 + 2e-
Cl2 + 2e- > 2Cl-
Mg > Mg2+ + 2e-
Mg2+ + 2e- > Mg
Which half-reaction will take place at the anode during the electrolysis of 1.0 M AgNO3?

Ag > Ag+ + e-
2H2O + 2e- >H2 + 2OH-
2H2O >O2 + 4H+ + 4e-
Ag+ + e- >Ag

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