The effect of addition of helium gas to the following reaction in equilibrium state, is : PCl5(g) PCl3(g) + Cl2(g) (A) addition of helium will not affect the equilibrium (B) the equilibrium will shift

Question

The effect of addition of helium gas to the following reaction in equilibrium state, is : PCl5(g) PCl3(g) + Cl2(g)

(A) addition of helium will not affect the equilibrium
(B) the equilibrium will shift in the forward direction and more of Cl2 and PCl3 gases will be produced.
(C) the equilibrium will go backward due to suppression of dissociation of PCl5.
(D) helium will deactivate PCl5 and reaction will stop.

Prashant Kotian · Accepted Answer

Correct answer: B. At constant pressure equilibrium shit where number of moles of gas increases so this reaction goes forward direction.

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