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10 Nov 2019
Write the expression for the solubility-product constant for CaF2. Solid silver chromate is added to pure water at 25 C, and some of the solid remains undissolved. The mixture is stirred for several days to ensure that equilibrium is achieved between the undissolved Ag2CrO4(s) and the solution. Analysis of the equilibrated solution shows that its silver ion concentration is 1.3 104 M. Assuming that Ag2CrO4 dissociates completely in water and that there are no other important equilibria involving Ag+ or CrO42- ions in the solution, calculate Ksp for this compound. The Ksp for CaF2 is 3.9 1011 at 25 C. Assuming that CaF2 dissociates completely upon dissolving and that there are no other important equilibria affecting its solubility, calculate the solubility of CaF2 in grams per liter. Calculate the molar solubility of CaF2 at 25 C in a solution that is (a) 0.010 M in Ca(NO3)2, 0.010 M in NaF. Does a precipitate form when 0.10 L of 8.0 103 M Pb(NO3)2 is added to 0.40 L of 5.0 103 M Na2SO4?
Write the expression for the solubility-product constant for CaF2. Solid silver chromate is added to pure water at 25 C, and some of the solid remains undissolved. The mixture is stirred for several days to ensure that equilibrium is achieved between the undissolved Ag2CrO4(s) and the solution. Analysis of the equilibrated solution shows that its silver ion concentration is 1.3 104 M. Assuming that Ag2CrO4 dissociates completely in water and that there are no other important equilibria involving Ag+ or CrO42- ions in the solution, calculate Ksp for this compound. The Ksp for CaF2 is 3.9 1011 at 25 C. Assuming that CaF2 dissociates completely upon dissolving and that there are no other important equilibria affecting its solubility, calculate the solubility of CaF2 in grams per liter. Calculate the molar solubility of CaF2 at 25 C in a solution that is (a) 0.010 M in Ca(NO3)2, 0.010 M in NaF. Does a precipitate form when 0.10 L of 8.0 103 M Pb(NO3)2 is added to 0.40 L of 5.0 103 M Na2SO4?
Jamar FerryLv2
25 Feb 2019