18 MCAT Question of the Day | MCAT Course

Q: In which of the following reactions will the equilibrium shift to the left when the pressure on the system is decreased?



I. 2H 2 + O 2 ↔ 2H 2 O

II. 2CO + O 2 ↔ 2CO 2

III. 2MgO(s) ↔ 2Mg(s) + O 2 (g)



A I only B II only C I and II only D I and III only





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