Selective precipitation questions ANSWERS. A solution of Na2SO4 is added drop-wise to a solution that is 0.0150M in Ba2+ and in 0.0150 Sr2+.
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Homework StatementMy molarity is wrong which keeps me from ding the rest of this problem.any help would be greatly appreciated.A researcher has a 450.0 mL solution that is 0.421 M in Hg2(NO3)2 and 0.0191 M in Pb(NO3)2. She plans to add solid potassium iodide to separate the mixture by selective precipitation.Ksp PbI2 = 1.4e-8Ksp Hg2I2 = 1.2e-28What is the maximum concentration of iodide ions that may be in solution to achieve the best separation possible?M I-=?How many grams of potassium iodide should she add to achieve this?g of KIWhat will the percentage of mercury(I) ions remaining in solution be?% Hg2+22. Homework Equationsksp=.3. The Attempt at a Solutionhg2i2 = hg2 + 2i1.2e-28 =.421 ^2= 1.68e^-14, which is wrong and I have no idea what I am doing wrong.