Explain the half-reactions and the respective standard

Reference no: EM13211494

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) hydrogen gas
C) nickel wire
D) oxygen gas

A galvanic cell consists of a Ni2+/Ni half-cell and a standard hydrogen electrode. If the Ni2+/Ni half-cell standard cell functions as the anode, and the standard cell potential is 0.26 V, what is the standard reduction potential for the Ni2+/Ni half-cell?

A) +0.26 V
B) -0.26 V
C) +0.13 V
D) -0.13 V

Reference no: EM13211494

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