Consider two hypothetical metals, X and Y, which can exist as metal ions X2+ and Y3+, respectively. For these two metals, the standard reduction potentials are
X2+ + 2 e- → X (0.281 V)
Y3+ + 3 e- → Y (0.279 V)
What is the value of ?G0 at 25?C for the reaction
3 X(s) + 2 Y3+(aq) → 3 X2+(aq) + 2 Y(s)"