Question

Reactions at Electrodes during Electrolysis Answer the following questions by selecting the appropriate half-reaction. Assume that in each case the experiment is performed in an electrolysis cell having electrodes made of non-reacting material. Which half-reaction will take place at the anode during the electrolysis of 1.0 M AgNO3? O 2H20 + 2e - H2 + 20H- O Ag+ + e - Ag O Ag - Ag+ + e O 2H20 02 + 4H+ + 4e* Which half-reaction will take place at the cathode during the electrolysis of 1.0 M AgNO3? O Ag+ + + Ag O 2H20 02 + 4H+ + 4e 2H20 + 2 H2 + 20H- O Ag —Agt + e which half-reaction will take place at the anode during the electrolysis of molten MgCl2? Mg + Mg2+ + 2e O Cl2 + 2e - →201 Mg2+ + 2e - Mg 2c + Cl2 + 2e Which half-reaction will take place at the anode during the electrolysis of molten KF? 2F - F2 +2e OK K+ + e O F2 + 2e →→2F- O K+ + +K Submit Answer Incorrect. Tries 2/5 Previous Tries

Reactions at Electrodes during Electrolysis

Previous Tries are:
1st Try:
2H2O --> O2 + 4H+ + 4e-   
2H2O + 2e- --> H2 + 2OH-   
2Cl- --> Cl2 + 2e-   
2F- --> F2 + 2e-

2nd Try:
2H2O --> O2 + 4H+ + 4e-
Ag --> Ag+ + e-
2Cl- --> Cl2 + 2e-
2F- --> F2 + 2e-

Answer 1

Products of electrolyse depends on tendency to reduced of oxidised which in turn depends on reduction potential values 1) Anode 1.0m AgNoz oxidation d 2tho ₂ + 4H+ + yé Loxidnon 2 5 Cathode reduction Agt te Ag Reduction @x Anode electrolyses of molten Mg Cl₂ oxidation 2u 20 – 2 +2e the @ oxidation Anode molten KF oxidation 2F ² +2e- oxidation