The given reaction is exothermic in the direction in which it is written.
Correct answer: D. Increased pressure and decreased temperature
- A. Decreased pressure
- B. Increased temperature
- C. Increased temperature and decreased pressure
- D. Increased pressure and decreased temperature
Explanation
The increased pressure and decreased temperature conditions will favor the forward reaction. A decrease in temperature favors the exothermic reaction, forward in this case. An increased pressure favors the side with less number of moles right-hand side, which produces X2Y2.
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About Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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