Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2.Degree of dissociation of PCl5 will_________________?
Correct answer: D. None of these
- A. Decrease on addition of Cl2
- B. Increase on addition of an inert gas at constant pressure
- C. Decrease on increasing the pressure of the system
- D. None of these
Explanation
Adding Cl2 shifts the equilibrium backwards, increasing pressure favours the side with fewer moles, and adding inert gas at constant pressure shifts equilibrium toward the side with more moles, increasing dissociation. Thus statements A, B, and C are correct, so there is no wrong statement among them.
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