What is the maximum amount of sodium sulfate that can be added to 1.00 L of 0.0020 M Ca(NO₃)₂ before precipitation of calcium sulfate begins? K_sp = 2.4 *10¯⁵ for calcium sulfate A) 1.2 * 10¯² mol B) 4.9 * 10¯³ mol C) 3.5 *10¯³ mol D) 1.2 * 10¯⁵ mol E) 4.8 * 10¯⁸ mol

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The correct answer is A because the maximum amount of sodium sulfate that can be added to 1.00 L of 0.0020 M Ca(NO3)2 before precipitation of calcium sulfate begins is 1.2 * 10^-2 mol. This is because the Ksp for calcium sulfate is 2.4 * 10^-5, which means that the concentration of Ca2+ and SO42- ions in solution must be less than this value in order to prevent precipitation. The addition of sodium sulfate will increase the concentration of SO42- ions in solution, which will in turn decrease the concentration of Ca2+ ions. This will eventually lead to the precipitation of calcium sulfate when the Ksp is exceeded.

What Is the Maximum Amount of Sodium Sulfate That Can