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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