Chemical Equilibrium: Understanding the Equilibrium Constant

What is the equilibrium constant for the given reaction?

0.042

0.42

2.4

24

The equilibrium constant of the reaction is 0.042.

The reaction equation is given as:

PCl5(g) ⇄ PCl3(g) + Cl2(g)

Recall that this equation shows the decomposition of phosphorus pentachloride.

To calculate the equilibrium constant (K), we use the formula:

K = [PCI3][CI2] / [PCI5]

Substitute the given values:

K = [0.020]^2 / [0.0095]

K = 0.042

Therefore, the equilibrium constant for the given reaction is 0.042.