Consider the reaction A + B ∆ AB. The vessel on the right contains an equilibrium mixture of A molecules (red spheres), B molecules (blue spheres), and AB molecules. If the stopcock is opened and the contents of the two vessels are allowed to mix, will the reaction go in the forward or reverse direction? Explain.

Video transcript

Hi everyone. This problem reads. Consider the following hypothetical decomposition reaction Xy yields X plus Y. The vessel on the right represents an equilibrium mixture of X. Adams, green sphere, Y. Adams purple sphere and xy molecules in which direction will the reaction proceed when the stop cock is opened and the contents of the two vessels are allowed to mix justify your answer. So we want to know which direction will the reaction proceed when the stop cock is opened? And in the problem we're told that the vessel on the right represents an equilibrium mixture. Okay, and so here we're dealing with lush outliers principle, which tells us that when a system at equilibrium is disturbed, it's going to try to readjust to establish that equilibrium again. Alright, So, let's just write out our reaction. So we have X Y yields X plus Y. All right. So, we know that the reaction on the right is at equilibrium, and we can see that we have more Xy in the vessel on the right than we do on the vessel on the left. In terms of X. Y molecules, the purple and the green, both together in our reactions. Since xy when the stop cock is opened, there's going to be an excess of Xy molecules when it's open, we're going to have excess of that. And based off of our reaction, we can see that X Y is a reactant. All right. And so since X Y is a reactant, the equilibrium will shift in the four direction. So that means it's going to shift to the right away from the reactant. Alright, so when we write out our answer for this problem, then it's going to be the reaction well, shifts, right? Okay, So in the four direction, the reaction shifts, right? Because there will be and excess of X Y molecules. Okay, so this is going to be our final answer, and the justification for that answer, that is it for this problem? I hope this was helpful.