Consider the following reaction: PCI{(g) PC13(g)+ Cl2(g) If 1.00×10-3 moles of PCI5, 0.302 moles of PC13, and 0.366 moles of Cl, are at equilibrium in a 17.0 L container at 730 K, the value of the equilibrium constant, Kp. is

Chemistry: Principles and Reactions
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Chapter12: Gaseous Chemical Equilibrium
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Problem 20QAP: Consider the following hypothetical reactions and their equilibrium constants at 75C,...
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Consider the following reaction:
PCI{(g) PC13(g)+ Cl2(g)
If 1.00×10-3 moles of PCI5, 0.302 moles of PC13, and 0.366 moles of Cl, are at equilibrium in a 17.0 L
container at 730 K, the value of the equilibrium constant, Kp. is
Transcribed Image Text:Consider the following reaction: PCI{(g) PC13(g)+ Cl2(g) If 1.00×10-3 moles of PCI5, 0.302 moles of PC13, and 0.366 moles of Cl, are at equilibrium in a 17.0 L container at 730 K, the value of the equilibrium constant, Kp. is
Expert Solution
Introduction

Equilibrium constants mainly get measured in concentration terms as well as pressure terms. The equilibrium constant evaluated in pressure terms is symbolized "Kp" whereas equilibrium constant evaluated in concentration terms is symbolized "Kc".

 

Chemistry homework question answer, step 1, image 1

Solution

The given reaction is as follows,

Chemistry homework question answer, step 2, image 1

The formula for the calculation of the equilibrium concentration/molarity is shown below.

Chemistry homework question answer, step 2, image 2

Solution

Substitute the known values in the equation (II) to calculate the concentrations.

The concentration of PCl5:

Chemistry homework question answer, step 3, image 1

The concentration of PCl3:

Chemistry homework question answer, step 3, image 2

Solution

The concentration of Cl2:

Chemistry homework question answer, step 4, image 1

Substitute the known values in the equation (I).

Chemistry homework question answer, step 4, image 2

Thus the value of equilibrium constant (Kc) is 6.513.

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