Problem: If a solution with initial concentrations of PCl 3 and Cl2 both equaling 2.50 x 10 -3 M before reaction gives an equilibrium concentration of PCl3 of 5.25 x 10 -4 M. What is the equilibrium constant for the reaction? PCl5 <-> PCl3 + Cl2

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If a solution with initial concentrations of PCl 3 and Cl2 both equaling 2.50 x 10 -3 M before reaction gives an equilibrium concentration of PCl3 of 5.25 x 10 -4 M. What is the equilibrium constant for the reaction? 

PCl5 <-> PCl3 + Cl2


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