Consider the exothermic reaction CoCl 2-1aq2 + 6 H O1l2 ∆ Co1H O2 2 + 1aq2 + 4 Cl-1aq2 which interconverts the blue CoCl 2- ion and the pink Co 2 +CoCl 2- increase or decrease when the following changes occur?(c) The solution is diluted with water.

Video transcript

Hi everyone for this problem. It reads the inter conversion of the purple and green ion shown in the following reaction is endo thermic. What happens to the equilibrium concentration of chromium three chloride in a solution of the reaction when the solution is diluted with water. So we want to know what happens when the solution is diluted with water. And here we're told what happens to the equilibrium concentration. So we're dealing with outliers principle here and according to lash outliers principle, if we disturb an equilibrium system, the system will readjust to maintain its equilibrium state. And so any alteration we make is going to cause a change in the system. So let's just recall that if a reactant is added, what that means is the reaction is going to shift to the right and when a reaction shifts to the right, more product is going to form. However, if we add a product then the reaction will shift to the left and when we shift to the left or when the reaction shifts to the left, more reactant, more reactant will form. Okay, and so here diluting the solution means we're adding more water to the solution. So we can see here that water is a reactant and when we dilute something we're adding more water to the solution, since water is a reactant, what that means is the reaction is going to shift to the right? Okay. And so more of the green ion will form and the chromium three chloride will decrease. Okay, so let's just write that out. So we have water is a reactant. Okay. And so looking at our reaction, our reaction is going to shift to the right. Okay. So what that means is the concentration of our purple chromium three core chloride ion is going to decrease and the ion. Okay. So yes, so this concentration is going to decrease and the concentration for this one will increase. Okay, So in terms of answering this question, the answer is going to be the equilibrium concentration Of the chromium three chloride ion will decrease. Okay, so its concentration will decrease and the concentration of product will increase. So that's going to be the final answer for this problem. I hope this was helpful.