For the equilibrium PCl5(g)⇌PCl3(g)+Cl2(g), the equilibrium constant Kp is 0.497 at 500K. A gas cylinder at 500K is charged with PCl5(g) at an initial pressure of 1.66atm. Determine the equilibrium pressure of all species at this temperature.

Explanation:

Hello,

In this case, for the given reaction, the equilibrium expression is:

But in terms of the reaction extent can also be written as:

Whereas the initial pressure is 1.66 atm. Thus, we write:

And solving for we obtain:

Therefore, the pressure of each species at equilibrium is:

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a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.