At 273 K, ΔG° for the Reaction 2 C

question 57

Multiple Choice

At 273 K, ΔG° for the reaction 2 C + O₂ → 2 CO
Is about -280 kJ, and at 1480 K is about -580 kJ. For the reaction
2 Zn + O₂ → 2 ZnO
ΔG° at 273 and 1480 K, respectively, is -640 and -280 kJ. Calculate ΔG° at 273 and 1480 K, respectively, for the reduction of zinc oxide by carbon.

• A) +180 and -150 kJ
• B) +360 and -300 kJ
• C) -360 and +300 kJ
• D) -180 and +150 kJ

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