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

question 73

Multiple Choice

A 0.012-mol sample of Na₂SO₄ is added to 400 mL of each of two solutions.One solution contains 1.5 $\times$ 10^-3 M BaCl₂;the other contains 1.5 $\times$ 10^-3 M CaCl₂.Given that K_sp for BaSO₄ = 1.5 $\times$ 10^-9 and K_sp for CaSO₄ = 6.1 $\times$ 10^-5:

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

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