A.) At a certain temperature, 0.720 mol SO3 is placed in a 3.00 L container. 2SO3(g)↽−−⇀2SO2(g)+O2(g) At equilibrium, 0.150 mol O2 is present. Calculate ?c. Answer is not 0.0765

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A.) At a certain temperature, 0.720 mol SO3 is placed in a 3.00 L container.

2SO3(g)↽−−⇀2SO2(g)+O2(g)

At equilibrium, 0.150 mol O2 is present. Calculate ?c.

Answer is not 0.0765
 

B.) 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.

 

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