Question

For the equilibrium PCl5(g) PCl3(g) + Cl2(g), Kc= 4.0 at 228ºC. If pure PCl5 is placed in a 1.00-L container and allowed to come to equilibrium, and the equilibrium concentration of PCl5(g) is 0.26 M, what is the equilibrium concentration of PCl3?
A) 0.13 M
B) 0.37 M
C) 0.26 M
D) 1.0 M
E) 0.017 M

Answer

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