Based on the Half-Reactions and Their Respective Standard Reduction Potentials

question 76

Multiple Choice

Based on the half-reactions and their respective standard reduction potentials below,which addition to an aqueous solution containing Fe(NO₃) ₂ will result in a reaction under standard-state conditions? O₂(g) + 4 H⁺ +4 e^- → 2 H₂O(l) 1.23 V
Fe³⁺(aq) + e^- → Fe²⁺(aq) 0.77 V
Cu²⁺(aq) + 2 e^- → Cu(s) 0.34 V
2 H⁺(aq) + 2 e^- → H₂(g) 0.00 V
Ni²⁺(aq) + + 2 e^- → Ni(s) -0.26 V
Fe²⁺(aq) + 2 e^- → Fe(s) -0.45 V

• A)aqueous copper(II)acetate
• B)nickel wire
• C)hydrogen gas
• D)oxygen gas

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