Answer the following question

Question

A(g) <--> B g) + C(g) Kp = 2.00

Assume you placed 1.0 mole each of 'A' , 'B' , and 'C' in a container.
Without actually doing the calculations explain how you would determine whether or not the system is at equilibrium, and if not which direction would be favored to reach equilibrium.

Answer 1

This system is at equilibrium because 2 moles of product divided by 1 mole of reactant gives you a Qp (similar to the equilibrium constant, but at any given time), of 2. If Qp and Kp are equal, then the system is at equilibrium.