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EquilibriumMCQ

Problems 33 and 34 both concern the dissociation of phosphorus pentachloride into chlorine and phospEquilibrium Chemistry Question

Question

Problems 33 and 34 both concern the dissociation of phosphorus pentachloride into chlorine and phosphorus trichloride, which has Kp = 0.015 at 450 K.
PCl5(g) ⇌ PCl3(g) + Cl2(g) , Kp = 0.015
A closed container at 450 K initially contains only PCl5(g) and PCl3(g), each with a partial pressure of 2.7 bar. After the system reaches equilibrium, what is the partial pressure of Cl2(g)?

A.

0.015 bar

✓ Correct
B.

0.12 bar

C.

0.20 bar

D.

2.7 bar

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