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Question
Phosphorus pentachloride decomposes to phosphorus trichloride at high temperatures according to the equation:
PCl5(g) 
PCl3(g) + Cl2(g)
At 250 0. 125 M PCl5 is added to the flask. If Kc = 1.80, what are the equilibrium concentrations of each gas?
A) [PCl5] = 0.0 0765 M, [PCl3] = 0. 117 M, and [Cl2] = 0. 117 M
B) [PCl5] = 0. 0625 M, [PCl3] = 0. 335 M, and [Cl2] = 0. 335 M
C) [PCl5] = 1.80 M, [PCl3] = 1.80 M, and [Cl2] = 1.80 M
D) [PCl5] = 3.96 M, [PCl3] = 3.83 M, and [Cl2] = 3.83 M
Answer
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