In the given Exothermic reaction PCl3 + Cl2 (g) ➔PCl5(g) an increase in yield will be favoured by:
Correct answer: A. Decrease of temperature
- A. Decrease of temperature
- B. Increase of temperature
- C. Keeping temperature constant
- D. None of these
Explanation
Since the forward reaction is exothermic, decreasing the temperature will cause the reaction to shift in the forward direction by Le Chatlier's principle.
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About Le Chatelier's Principle
Le Chatelier's principle predicts how an equilibrium responds when concentration, pressure or temperature changes. Questions apply it to reversible reactions, identify the direction of shift and distinguish genuine equilibrium changes from the effect of a catalyst, which changes the rate of reaching equilibrium but not its position.
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