Wednesday
April 16, 2014

Homework Help: Chemistry

Posted by Molly on Monday, April 25, 2011 at 11:04am.

PCl5 --> PCl3 + Cl2 (Kp = 630 at 546 K)

A system is prepared by placing equimolar amounts of the three gases shown in the equation above in a suitable rigid container held at constant volume. Equilibrium is established at 546 K.

(A) When equilibrium is established, how does [PCl3] compare to [Cl2]? Explain.

(B) When equilibrium is established, how does [PCl5} compare to [PCl3]? Explain.

(C) When equilibrium is established, how does the rate of the forward reaction compare to the rate of the reverse reaction? Explain.

(D) If the volume of the container is increased at constant temperature, then:
(1) What effect is observed on the number of moles of PCl5 in the system? Explain.
(2) Does the value of Kp increase, decrease, or remain the same? Explain.

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