EDTA is a complexing agent commonly used in chemistry and chelation treatments. Determine the equilibrium concentrations in a solution that initially contains 0.0882 mol/L lead and 0.2946 mol/L EDTA. Pb (aq) + EDTA (aq) Pb(EDTA) (aq) (Answer: [Pb-2.03-10" mol/L)
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- The mineral pyrite, FeS2(s), can incorporate large amounts of arsenic. The dissolution of arsenic-rich pyrite can therefore release arsenic into groundwater (i.e., pyrite dissolution can be written as FeS2(s) = Fe2+ + S22-). What equation would you use to calculate whether pyrite in an aquifer will dissolve or precipitate?At a particular temperature, the solubility of In₂(SO₄)₃ in water is 0.0058 M. You have found Ksp to be 7.1 × 10⁻¹⁰. If solid In₂(SO₄)₃ is added to a solution that already contains 0.200 M Na₂SO₄, what will the new solubility of the solid be?In the solubility rules, Ag2CO3 was listed as an "insoluble" salt.It is actually slightly soluble in an equilibrium reaction:Ag2CO3 (s) ⇌ 2Ag+ (aq) + CO32- (aq)The concentration of CO32- at equilibrium (25oC) is 0.000116 M. What is the value of Ksp at this temperature?
- Sodium chloride is added slowly to a solution that is 0.010 M in Cu+, Ag+, and Au+. Because solubility "rules" are generalizations, we don't use solubility rules when we have the specific Ksp data available. Instead, here, we can just use the Ksp value for CuCl which is 1.9 × 10–7, for AgCl is 1.6 × 10–10, and for AuCl is 2.0 × 10–13. Based on these specific Ksp values, which compound will precipitate first? All will precipitate at the same time. It cannot be determined. CuCl(s) AgCl(s) AuCl(s)Calculate the solubility (in g/L) of silver chromate in water at 25°C if the Ksp for Ag3PO4 is 1.75 × 10-18. Ag3PO4(s) <==> 3Ag+ (aq) + PO43- (aq); Ksp = 27s4, s = _________ mol/L x MM of Ag3PO4 = _________ g/L.Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2+(aq) and 0.0260 M Ag+(aq). What will be the concentration of Ca2+(aq) when Ag2SO4(s) begins to precipitate? Solubility-product constants, ?sp, can be found in the chempendix. [Ca2+]= M What percentage of the Ca2+(aq) can be precipitated from the Ag+(aq) by selective precipitation? percentage:
- A 50.0 mL sample of 0.0543 M AgNO3(aq) is added to 50.0 mL of 0.100 M NaIO3(aq). Calculate the [Ag+] at equilibrium in the resulting solution.The Ksp value for AgIO3(s) is 3.17 × 10-8. [Ag+]=?The Ksp for CoCO3 = 1.0 × 10–10 and the Ksp for PbCO3 = 7.4 × 10–14. When Na2CO3 is added dropwise to a solution containing 0.010 M Co2+ and 0.010 M Pb2+, which ion will precipitate first? What must the [CO32–] be so that the first ion to precipitate comes out of solution, but the second ion does not?Potassium dichromate has several industrial applications. To determine the purity of the salt that will be used in different industrial processes, a sample mass equal to 2.660 g was dissolved and quantitatively transferred to a 500.00 mL flask. An aliquot of 25.00 mL of this solution was treated with excess KI and the released iodine was titrated with 0.1000 mol L-1 sodium thiosulfate, spending 27.00 mL. Calculate the purity of the analyzed salt. Data:K = 39.10 O = 16.00 Cr = 52.00 I = 126.9 S = 32.07
- The concentration of Ag+ in a solution saturated with Ag2C2O4(s) is 2.3 × 10-4 M. Calculate Ksp for Ag2C2O4.a solution containing 6.25×10–3 M of S2– and 5.63×10–3 M of Cd2+ was prepared. CdS ⇌ Cd2+ + S2- Calculate the Qsp of the mixture (in 3 sig. figures) and In the given scenario, will a precipitate (Ksp = 3×10–28) form?(a) If the molar solubility of Cu3(PO4)2 at 25 oC is 1.67e-08 mol/L, what is the Ksp at this temperature?Ksp = _______(b) It is found that 1.75e-06 g of Cu3(AsO4)2 dissolves per 100 mL of aqueous solution at 25 oC. Calculate the solubility-product constant for Cu3(AsO4)2.Ksp = _______(c) The Ksp of ScF3 at 25 oC is 5.81e-24. What is the molar solubility of ScF3?solubility = ______ mol/L