PCl3(g) + Cl2(g) ⇄ PCl5(g) Kc = 6.5 At a certain point in time, a 1.00 L rigid reaction vessel conta — Equilibrium Chemistry Question
Question
PCl3(g) + Cl2(g) ⇄ PCl5(g) Kc = 6.5
At a certain point in time, a 1.00 L rigid reaction vessel contains 1.5 mol of PCl3(g), 1.0 mol of Cl2(g), and 2.5 mol of PCl5(g). Which of the following describes how the measured pressure in the reaction vessel will change and why it will change that way as the reaction system approaches equilibrium at constant temperature?
A.
The pressure will increase because Q < Kc.
B.
The pressure will increase because Q > Kc.
C.✓ Correct
The pressure will decrease because Q < Kc.
D.
The pressure will decrease because Q > Kc.
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