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A sample of phosphorus (v) chloride, PCl^5, is heated in a closed system with volume 12.0 dm^3. The mixture reaches an equilibrium described by the following equation: PCl^5= PCl^3+Cl^2
a) the pressure is increased. Describe and explain the effect on the amount of chlorine present at equilibrium.
b) At 520K, the Kc value is 0.202 dm^3 mol^-1.
the equilibrium amount of Cl^2 is found to be 0.0900 mol.
Calculate the amount of PCl^5 present in the 12.0 dm^3 container at equilibrium. Give you answer to an appropriate number of significant figures.