what color change happen when you add a solution containing Ag+ ion to the mixture AgSCN? How is this consistent with LeChatelier's principle? pls correct my answer.
my answer is a more white solid or pecipitate form due to insoluble AgSCN. It is consistent with LeChatelier's principle in the sense that when a solution containing Ag+ ion is added to the mixture AgSCN the equation will shift to left to relieve the stress
Correct. Last sentence, should read: It is consistent with LeChatelier's principle in the sense that when a solution containing Ag+ ion is added to the mixture AgSCN the equation will shift to relieve the stress of increased Ag+
The correct answer is that when a solution containing Ag+ ions is added to the mixture AgSCN, a change in color from colorless to a brick-red color will occur. This is consistent with LeChatelier's principle.
To explain why, let's go through the reaction and LeChatelier's principle. The reaction is as follows:
AgSCN (s) ⇌ Ag+ (aq) + SCN- (aq)
The initial mixture contains AgSCN, which is a colorless solid. When a solution containing Ag+ ions is added, some of the Ag+ ions will react with SCN- ions to form AgSCN, which is a brick-red solid precipitate. The reaction is a dynamic equilibrium, meaning it can go in both forward and reverse directions.
According to LeChatelier's principle, when a stress is applied to a system at equilibrium, the system will respond by shifting the equilibrium position to counteract the stress and re-establish equilibrium.
In this case, the addition of Ag+ ions introduces more Ag+ ions on the right side of the equation. As a result, the equilibrium will shift to the left to consume some of the Ag+ ions and form more AgSCN. This ultimately leads to the formation of a brick-red precipitate.
Therefore, the correct answer is that the color change observed is from colorless to brick-red due to the formation of insoluble AgSCN. This color change is consistent with LeChatelier's principle because the equilibrium shifts to the left to relieve the stress caused by the increased concentration of Ag+ ions.