Answer: Br⁻ precipitates first.
- A Cl⁻ precipitates first
- B Br⁻ precipitates first
- C Both precipitate together
- D Neither precipitates
Correct answer: B. Br⁻ precipitates first
Explanation: AgBr has lower Ksp, so it needs less Ag⁺ to initiate precipitation. Br⁻ precipitates first.
As the reaction proceeds, reactant concentration falls and product concentration rises until both level off at equilibrium.
Concept context
When forward and reverse reaction rates are equal, equilibrium is reached. Learn about Kc, Kp, Le Chatelier's principle, and acid-base equilibria, including pH, buffer solutions, and solubility product.