Phosphorus pentachloride decomposes according to the chemical equation PCl5(g)↽−−⇀PCl3(g)+Cl2(g)?c=1.80 at 250 ∘C A 0.1974 mol sample of PCl5(g) is injected into an empty 2.65 L reaction vessel held at 250 ∘C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium. PCI5 is not 0.0179 and PCI is not 0.1795

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