The reaction below is exothermic. PCl3(g) + Cl2(g) ⇌ PCl5(g) Which change will increase the number of moles of PCl5(g) present at equilibrium? | Equilibrium | TheChemSolver

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Question

The reaction below is exothermic.
PCl₃(g) + Cl₂(g) ⇌ PCl₅(g)
Which change will increase the number of moles of PCl₅(g) present at equilibrium?

A.

The volume of the reaction vessel is tripled.

B.

The reaction vessel is cooled.

✓ Correct

C.

Some of the Cl₂(g) is removed.

D.

Krypton gas is added to the reaction vessel.

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