Effect of adding an inert gas to the PCl5 dissociation equilibrium

1. A.
   helium will deactivate ${PCl}_{5}$ and reaction will stop.
2. B.
   the equilibrium will shift in the forward direction and more of ${Cl}_{2}$ and ${PCl}_{3}$ gases will be produced.
3. C.
   the equilibrium will go backward due to suppression of dissociation of ${PCl}_{5}$.
4. D.
   addition of helium will not affect the equilibrium.

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1. A.
   ${PCl}_{5}$ will increase
2. B.
   ${Cl}_{2}$ will decrease
3. C.
   ${PCl}_{5},{PCl}_{3}\&{Cl}_{2}$ remain constant
4. D.
   ${PCl}_{3}$ will increase

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