A 0012-Mol Sample of Na₂SO₄ Is Added to 400 ML of of Each

question 22

Multiple Choice

A 0.012-mol sample of Na₂SO₄ is added to 400 mL of each of two solutions. One solution contains 1.5  10^-3 M BaCl₂; the other contains 1.5  10^-3 M CaCl₂. K_sp for BaSO₄ = 1.5  10^-9 and K_sp for CaSO₄ = 6.1  10^-5. Which of the following statements is true?

• A) Both BaSO₄ and CaSO₄ would precipitate.
• B) Not enough information is given to determine whether precipitation would occur.
• C) CaSO₄ would precipitate but BaSO₄ would not.
• D) BaSO₄ would precipitate but CaSO₄ would not.
• E) Neither BaSO₄ nor CaSO₄ would precipitate.

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