Now, let's look at this reaction. Suppose we had some reaction that wasn't at Stan and state condition and that wasn't an equilibrium. So our reactant A was an acre state, reactant B was an acre state, our product C was also an acrylic state. And our product D was also an acreage state. Now, this Q has the same meaning as this K. It's also a constant. And we can use or develop an expression for this reaction for this Q in the same way that we did here.