Ksp & Precipitation

Explore the solubility product constant (Ksp) that describes the equilibrium between a solid ionic compound and its dissolved ions. Calculate ion concentrations, predict precipitation using the reaction quotient Q (if Q > Ksp, precipitation occurs), and understand the common ion effect that decreases solubility. Practice solving Ksp problems for various stoichiometries and applying Le Chatelier's principle to solubility equilibria.

KSP AND PRECIPITATION

Solubility product constant describes the equilibrium between a solid ionic compound and its dissolved ions.

CORE FORMULAS

Solubility Product

AP EXAM CONNECTION

Unit: Unit 7: Equilibrium
Learning Objective: TRA-13.A

COMMON MISCONCEPTIONS

Assuming all ionic compounds are fully soluble.

KEY TAKEAWAYS

Precipitation occurs when Q > Ksp.

DEEP DIVE: RELATED CONCEPTS

COMMON ION EFFECT

Decrease in solubility of an ionic compound when a common ion is added to the solution....

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