The Common Ion Effect

The video tutorial explains the common ion effect, an application of Le Chatelier's principle, which helps predict and control precipitation in chemical equilibria. It uses examples like silver iodide and cadmium sulfide to illustrate how adding a common ion shifts equilibrium, promoting precipitation. The tutorial includes a quantitative analysis of cadmium sulfide's solubility in a cadmium bromide solution, demonstrating how the presence of a common ion reduces solubility and enhances precipitation.

What is the common ion effect and how does it relate to solubility?

What role does Le Chatelier's principle play in the common ion effect?

Explain how adding potassium iodide affects the equilibrium of silver iodide.

Describe the process of calculating the molar solubility of cadmium sulfide in a cadmium bromide solution.

How does the presence of cadmium ions in solution affect the molar solubility of cadmium sulfide?