1. Calculate the solubility of ZnC204 in a solution held at pH 4.00. Consider the equilibria ZnC204(s) Zn2+ + C₂042- 2- Ksp = 7.5 x 10-9 C2O4 + H2O HC204 + OH Kb1 = 1.8 × 10-10 HC2O4 + H2O H2C2O4 + OH¯ Kb2 = 1.8 x 10-13
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- Consider the following two acids: pKa1 = 2.98; pKa2 = 13.40 HO2CCH2CH2CH2CH2CO2H Adipic acid pKa1 = 4.41; pKa2 = 5.28 In two separate experiments the pH was measured during the titration of 5.00 mmol of each acid with 0.200 M NaOH. Each experiment showed only one stoichiometric point when the data were plotted. In one experiment the stoichiometric point was at 25.00 mL added NaOH, and in the other experiment the stoichiometric point was at 50.00 mL NaOH. Explain these results.Calculate the molar solubility of AgSCN (Ksp = 1.1 x 10^-12) in a solution maintained at pH 9.00 and where the concentration of ammonia is 0.1 M. HSCN: pKa = 4.0 [Ag(NH3)2]^+ : Kf1 = 2.04 x 10^3; Kf2 = 8.13 x 10^3For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. IF the solubilitv does change, pick the pH at which you'd expect the highest solubility. You'll find K data in t do Data sp Does solubillty change with pH? highest solubillity BaCro4 1.17x10-10 compound pH = 4 pH = 6 pH = 7 BaSO4 1.08x10-10 O yes CaCO3 3.36x10-9 CaCl, O no CaF2 3.45x10-11 Co(OH)2 5.92x10-15 O yes Ca (OH), CuBr 6.27x10-9 О по CuCo3 1.4x10-10 O yes Mg Cl, Fe(OH)2 4.87x10-17 О по PBCO3 7.40x10-14 PbCro4 2.8x10-13 PBF2 3.3x10-8 Mg(OH)2 5.61x10-12 Ni(OH)2 5.48x10-16 AgBrO3 5.38x10-5 Ag2CO3 8.46x10-12 AgCI 1.77x10-10 Ag2Cro4 1.12x10-12 SrCO3 5.60x10-10 ZnCO3 1.46x10-10 Zn(OH)2 3.0x10-17 AgBr 5.35x10-13 AuCI 1.77x10-10 Explanation Check O2021 McGraw-Hill Education. All Rights Reserved. Tems of Use Privacy Accessibility MacBook Air FI F2 F6 F10
- consider the reaction Ag2O(s) + H2O -> 2Ag+ + 2OH- Ksp = 3.8 x 10-16 If Ag2O forms to an appreciable extent what effect will this equilibrium have on the solubility of AgCN? Explain your reasoning. Judging by the equilibrium reaction shown, would you expect the effect of this equilibrium on the solubility of AgCN to be pH dependent?Calculate the solubility of barium oxalate in pure water and in 0.1M HCI solution, KSP BaC2O4 = 2.3 x 10*-8, Ka2 H2C2O4= 6.1 x 10*-5.The solubility of CaCO3 is pH dependent. Calculate the molar solubility of CaCO3 (Ksp = 4.5 * 10-9) neglecting the acid–base character of the carbonate ion.
- For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the solubility does change, pick the pH at which you'd expect the highest solubility. You'll find K data in the ALEKS Data tab. sp compound CaCl₂ Ca3(PO4)₂ MgCl, 2 Does solubility change with pH? Oyes O no O yes no yes O no pH = 7 highest solubility pH = 6 X pH = 4 Ś24) The Ksp for Zn(OH)2 is 5.0 × 10-17. Determine the molar solubility of Zn(OH)2 in a solution with a pH of 10.6. (aq., 20 °C). A) 2.5 × 103 В) 3.9 х 10-4 C) 7.7 × 10- 13 D) 3.2 × 10-10 E) 5.0 × 10-17 F) 2.1 × 104 G) 5.0 x 10-12What is the pH of a buffer that is 0.120 M in chloroacetic acid(ClC2H3O2H) and 0.800 M in potassium chloroacetate (KClC2H3O2)? For chloroacetic acid, Ka = 1.4 x 10-4.
- A pH 7.0 buffer solution is made using NaOH and phosphoric acid. The sum of the concentrations of all phosphoric acid species is 0.1 M. The equilibrium constant Kw for the ionization of water is 10-14 and K's for the following equilibria are given: H3PO4 H* + H2PO4 K1 = 7.1×10 3 H2PO4 2- H* + HPO4 K2 = 6.2x10 8 3- НРО2 H* + PO4° K3 = 4.5x10-13 Calculate the concentrations of all species in solution. Formulas: pH =-log10[H*], pK=-log1,KCalculate the molar solubility of Hg2C2O4(Ksp= 1.75 x 10-13) in 0.13 M Hg2(NO3)2.A chemistry graduate student is given 125. mL of a 1.00M trimethylamine ((CH3)N) solution. Trimethylamine is a weak base with K = 7.4 × 10-4. What 3 mass of (CH3)2NHBr should the student dissolve in the (CH3)2N solution to turn it into a buffer with pH = 10.91? You may assume that the volume of the solution doesn't change when the (CH3)₂NHBr is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. 0 Ox x10 S