At some temperature,the reaction


PCl3(g) +Cl2(g) ====PCl5(g)

is at equilibrium when the concentration of PCl3, Cl2, and PCl5 are 10, 9.0, and 12mol/L, respectively. Calculate the value of Kc for this reaction at that temperature.

2 answers

What's your problem here? You substitute the concn listed into the Kc expression and solve for Kc.
okiee thanks