Consider the Reaction
PCl₅(g) $f$ PCl₃(g)+ Cl₂(g)
at a Certain Temperature,If the Initial Concentration of Temperature,If

Consider the reaction
PCl₅(g) $f$
PCl₃(g) + Cl₂(g)
At a certain temperature,If the initial concentration of PCl₅(g) Is 2.0 M,
At equilibrium the concentration of Cl₂(g)
Is 0.30 M.Calculate the value of K_c at this temperature.

A) 0.064
B) 0.053
C) 0.090
D) 19
E) 0.045