What is the solubility of calcium fluoride in a buffer solution containing 0.650 M HCHO2 (formic acid) and 0.20 M NaCHO2? K„(CaF2) = 3.4 x 10-11 K.(HF) = 6.8 × 10¬4 K.(HCHO2) =1.7 × 10¬4 (Hint: Consider the equation CaF2 (8) + 2H30*(ag) = Ca²+ (aq) + 2HF(aq) + 2H20(1) and solve the equilibrium problem.) Solubility = |м

What is the solubility of calcium fluoride in a buffer solution containing 0.650 M HCHO2 (formic acid) and 0.20 M NaCHO2? K„(CaF2) = 3.4 x 10-11 K.(HF) = 6.8 × 10¬4 K.(HCHO2) =1.7 × 10¬4 (Hint: Consider the equation CaF2 (8) + 2H30*(ag) = Ca²+ (aq) + 2HF(aq) + 2H20(1) and solve the equilibrium problem.) Solubility = |м

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter16: Solubility And Precipitation Equilibria

Section: Chapter Questions

Problem 70AP

See similar textbooks

Similar questions

Calculate the solubility of calcium carbonate water temperature of 5 °C; at that temperature, Ksp = 8.1 x 10^-9 for CaCO3, Ka = 2.8 x 10^-11 for HCO3-, and Kw = 2.0 x 10^-14.
Consider an amphoteric hydroxide, M(OH)₂ (s), where M is a generic metal. M(OH)₂ (s) = M²+ (aq) + 2OH(aq) Ksp = 4 X 10-16 M(OH)₂ (s) + 2OH(aq) [M(OH)₂1²2-(aq) K₁ = 0.03 Estimate the solubility of M(OH)₂ in a solution buffered at pH = 7.0, 10.0, and 14.0. solubility at pH = 7.0 solubility at pH = 10.0 solubility at pH = 14.0 M M M
(b) The solubility product, Ksp of silver chloride, AgCl is 1.0 x 10-10. What is the solubility of AgCI in g L-1?
At 15 °C, the solubility product of PbCrO4 is 1.69 × 10-14 mol2dm-6. (a) Write an expression for the solubility product of PbCrO4.(b) Calculate the solubility of PbCrO4.(c) On adding concentrated aqueous lead(II) nitrate dropwise to 0.010 moldm-3 potassium chromate (VI), what is the concentration of lead(II) ions when the first trace of precipitate appears?
When the sparingly soluble salt BACO, is dissolved in water, the following simultaneous equilibria apply: BACO; Ba" + co, co,- + H;0 HCO," + OH Employing mass- and charge-balance equations, the following relationship can be obtained for a saturated solution of BaCO, in water: Kyp = [Ba*"][CO,²] = 5.1 × 10* K, = [OH"][ HCO;"JM CO,²] = 2.1 x 10* (Ba**j° - K,K, [Ba"]" –- K, = 0 sp Find the concentration of free Ba" in the saturated solution.
What is the molar solubility (in mols/L)of silver chloride in 2.00 M NH3(aq) given that Ksp of AgCl = 1.77x10-10 and Kf of Ag(NH3)2* is 1.70x107? Express your answer in decimal notation rounded to three significant figures.
The solubility product constant of barium fluoride in water at 25o C is Ksp = 1.3 x 10-6. Calculate the solubility of this compound in 1.00 M Ba(NO3)2 (aq) at 25o If 15 mL of 0.024 M lead (II) nitrate is mixed with 30 mL of 0.030 M potassium chromate, will a precipitate form? (Ksp = 2.0 x 10-16 for PbCrO4) Calculate the ionic strength of the following solutions: 25 M Cr(NO3)3 05 M Al(ClO4) Using simple Debye-Huckel equation, estimate the following activity coefficients: SO42- at µ = 0.025 Fe(CN)63- at µ = 0.005 The solubility product constant of cuprous chloride in water at 25o C is Ksp = 1.0 x 10-6. Calculate the solubility of this compound in 0.020 M KCl(aq) at 25o
The solubility product constant of Hg2Cl2 is 2 × 10-18 at 25°C. Estimate the concentration of Hg22+ and Cl2 in equilibrium with solid Hg2Cl2 at 25°C.
[PBCI,] complex K; = 2.5 x 1015 For the aqueous at 25 °C. Suppose equal volumes of 0.0030M Pb(NO,) solution and 0.38M KCl solution are mixed. Calculate the equilibrium molarity of aqueous Pb- 2+ ion. Round your answer to 2 significant digits. ?
Consider the sparingly soluble salt cobalt (II) arsenate. (a) Write a balanced chemical equation for the dissolution of cobalt (II) arsenate in distilled water. (b) Write the expression for the solubility-product constant, Ksp, for cobalt (II) arsenate. (c) Determine the equilibrium concentrations, in mol L–1 , of each ion in the solution at 25°C. Be sure to show your work. (d) Calculate the mass, in mg, of cobalt (II) arsenate that is present in 50.0 mL of a saturated solution at 25°C. (e) Which salt, cobalt (II) arsenate or zinc arsenate has the greater value of [AsO43–] at equilibrium at 25°C? Justify your answer. *Note – you do not need to use a calculation. (The value of Ksp for zinc arsenate at this temperature is 2.8 × 10–28) *Answer already found for] parts a-c so just need the answers for part d and e
Calculate the molar solubility of Co(OH)3, Ksp = 2.5 x 10-43.
19" 0.00014 m Na2 Coz are combined? Determine the solubility of Cul (s) (Ksp.= 1.1x1013 In 0.15m Cu₂ (03 (aq) Solution,