When an Aqueous Solution of AgNO₃ Is Electrolyzed,a Gas Is

question 71

Multiple Choice

When an aqueous solution of AgNO₃ is electrolyzed,a gas is formed at the anode.What is the identity of the gas?
Reduction Half-Reaction
E° (V)
2H₂O(l) + 2e^- H₂(g) + 2OH^-(aq) -0.83
2H⁺(aq) + 2e^- H₂(g) 0.00
Ag⁺(aq) + e^- Ag(s) 0.80
NO₃^-(aq) + 4H⁺(aq) + 3e^- NO(g) + 2H₂O(l) 0.96
O₂(g) + 4H⁺(aq) + 4e^- 2H₂O(l) 1.23

• A)H₂O
• B)NO
• C)Ag
• D)O₂
• E)H₂