Which of the following statements is true? A. fractional precipitation is a meth

Question

Which of the following statements is true?
A. fractional precipitation is a method of selectively removing ions from an aqueous solution based on different colligative properties (boiling point, vapor pressure, etc.)
B. the molar solubility s of a semisoluble salt MX2 (where M is the metal cation and X is the nonmetallic anion) is calculated by taking the square root of Ksp
C. during our study of solubility equilibria, we've been making the assumption that the solutions follow Raoult's Law
D. precipitation occurs when, in an aqueous system at a certain temperature, the ion product Q is less than the solubility product constant Ksp at that temperature

Explanation / Answer

C. during our study of solubility equilibria, we've been making the assumption that the solutions follow Raoult's Law

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