was passed through a solution of , and . Which of the following compound(s) crystallise(s)?

Question

was passed through a solution of ,  and . Which of the following compound(s) crystallise(s)?

Canvas Classes · Accepted Answer

🧠 The "Aha!" Moment
This is a classic demonstration of the Common Ion Effect. When you add  (a strong electrolyte) to a solution of metal chlorides, you are flooding the system with Chloride ions ().

🗺️ The Standard Approach
1. The Equilibrium: For any salt , the state of solution is .
2. Ionic Product: When  is passed, the  increases dramatically.
3. Le Chatelier's Shift: To counter this, the equilibrium shifts to the left, increasing the formation of solid . This happens when the Ionic Prod

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