12. A solution saturated with a salt ofthe type M₂X has an osmotic pressure of 3.69 x10-2 atm at 300 K. Assuming ideal behavior, what is the Ksp value for the salt? (R = 0.082 atm·L mol-K-¹)
(A) 5.6 x 10-5
(B) 2.3 x 10-6
(C) 2.5 x 10-7
(D) 1.4 x 10-8
(E) 5.0 x 10-10

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