A sample of solid AB2 is placed in a volume of water, but not all of it dissolves. The solution above the undissolved solid is analyzed and the concentration of A2+ is found to be 1.4 x 10-4 M. What is the Ksp for AB2? -11 1.1 x 107 3.9 x 10-8 2.0 × 10-8 2.7 x 10-12

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