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Question 600420
JEE Chemistry · Hard

Chemical and Ionic Equilibrium: Ksp and precipitation MCQ

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Ksp and precipitationHardQuestion 600420

Question

A solution contains 0.001 M Ba²⁺ and 0.001 M SO₄²⁻. Ksp(BaSO₄) = 1×10⁻¹⁰. Will precipitation occur?
  1. A
    No, Q < Ksp
  2. B
    Yes, Q > Ksp
    Correct
  3. C
    At threshold Q = Ksp
  4. D
    Cannot determine

Correct answer

Yes, Q > Ksp

Explanation

Q = [Ba²⁺][SO₄²⁻] = 0.001 × 0.001 = 10⁻⁶. Ksp = 10⁻¹⁰. Since Q > Ksp, the solution is supersaturated and precipitation occurs.

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