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48 solutions

Selective Precipitation

Q. When 7.5×10^-4 g of KOH is dissolved in 1.00 L of 1.0×10^-10 M Cu(NO3)2, a precipitate of Cu(OH)2 is formed. True or False? (Ksp of Cu(OH)2 is 2.2×10^-20)

Solved • Mar 29, 2020

Selective Precipitation

Q. The Ksp of CaF2 at 25°C 5s 4×1/^-11. Consider a solution that is 1.0×10^-3 M Ca(NO3)2 and 1.0×10^-4 M NaF.

Solved • Mar 29, 2020

Selective Precipitation

Q. The Ksp of CaF2 at 25°C is 4×10^-11. Consider a solution that is 1.0×10^-1 M Ca(NO3)2 and 1.0×10^-5 M NaF.

Solved • Mar 29, 2020

Selective Precipitation

Q. When 12.0 mL of a 7.21×10-4 M zinc chloride solution is combined with 25.0 mL of a 8.47×10-4 M potassium carbonate solution does a precipitate form? (yes or no) For these conditions the Reaction Quotient, Q, is equal to .

Solved • Mar 18, 2020

Selective Precipitation

Q. When 25.0 mL of a 7.66×10-4 M iron(II) acetate solution is combined with 15.0 mL of a 2.18×10-4 M potassium hydroxide solution does a precipitate form? (yes or no) For these conditions the Reaction Quotient, Q, is equal to .

Solved • Mar 18, 2020

Selective Precipitation

Q. When 22.0 mL of a 1.92×10-4 M ammonium sulfate solution is combined with 18.0 mL of a 3.74×10-4 M barium acetate solution does a precipitate form? (yes or no) For these conditions the Reaction Quotient, Q, is equal to

Solved • Mar 18, 2020

Selective Precipitation

Q. A solution contains 0.060 M iodide ion I^- and 0.060 M carbonate ion CO3^2- (Ksp for PbCO3 is 7.4 x 10-14). Lead iodide (Ksp = 9.8 x 10-9) is a bright yellow solid. a. If solid Pb(NO3)2 is slowly added to the solution, which salt will precipitate first, PbI2 or PbCO3? b. What will be the concentration of the first ion that precipitates (CO3^2- or I-) when the second, more soluble salt begins to precipitate? Concentration = mol/L

Solved • Mar 16, 2020