. The equation (look at picture) represents a system _ .

that does not change
in physical equilibrium
in chemical equilibrium
that goes to completion

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

24

the awnser is group 12