Determine the molar solubility (S) of Ag,CO, in a buffered solution with a pH of 4.689 using the systematic treatment of equilibrium. Ksp(Ag,CO,) = 8.46 × 10-12; Kai(H,CO,) = 4.45 × 10-7; K2(H,CO,) = 4.69 × 10-". S = M
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- If the molar solubility of PbCrO4 at 25 oC is 5.48e-07 mol/L, what is the Ksp at this temperature?Ksp = (b) It is found that 1.08e-09 g of Fe(OH)3 dissolves per 100 mL of aqueous solution at 25 oC. Calculate the solubility-product constant for Fe(OH)3.Ksp = (c) The Ksp of Mg3(PO4)2 at 25 oC is 1.04e-24. What is the molar solubility of Mg3(PO4)2?solubility = mol/LAt 25oC, Ksp for AgBr is 5.0 x 10-3 g. Calculate the solubility of AgBr in g L-1 at 25oC a) in pure water b) in the presence of 0.2mol L-1 NaBr solutionCalculate the molar solubility of Ag2S in a solution maintained at pH 11.00 and where the concentration of free ammonia is 0.100 M. Ag2S: pKsp = 48.70H2S: Ka1 = 1.0 x 10-7 ; Ka2 = 1.2 x 10-15[Ag(NH3)2]+: Kf1 = 2.04 x 103 ; Kf2 = 8.13 x 103
- Will Mn(OH)2 precipitate from a 0.01 M solution of MnCl2 at pH = 9? Ksp(Mn(OH)2) = 1,0 x 10-13. Discuss from solubility diagrams and prove by calculation.calculation. Co is a metal that is present in every lithium battery to stabilize its charge and toincrease stability. Every cell phone, tablet and electric car relies on the availability ofcobalt, 97% of which is extracted from mines in places like the Congo, where essentially slave labor is used.Cobalt ions form complexes with e.g. CN- . You see solubility diagrams and fraction diagrams for CoCO3 with and without the addition of 10 mM CN- .. Explain whythe solubility of cobalt carbonate increases at high pH when cyanide ions are present.Write reaction formulas for the formation of the dominant cobalt cyanide complexes.Calculate the solubility of silver acetate,AgCH3COO , in an aqueous solution buffered at pH = 4.00 . Take the value of Ksp for silver acetate to be 1.9 x 10^-3 M2.The dissociation vapour pressure (the pressure of gaseous products in equilibrium with the solid reactant) of NH4CI at 427 °C is 608 kPa but at 459 °C it has risen to 1115 kPa. Calculate (a) the equilibrium constant. (b) the standard reaction Gibbs energy, (c) the standard enthalpy, (d) the standardentropy of dissociation, all at 427 °C. Assume that the vapour behaves as a perfect gas and that ΔHΘ and ΔSΘ are independent of temperature in the range given.
- The Ksp of CaC2O4 at 298 K is 2.30×10-9. Determine the molar solubility of this salt.Calculate the molar solubility of Ag2S (pKsp = 48.70) in a solution maintained at pH 9.00 and where the concentration of ammonia is 0.200 M.H2S: Ka1 = 1.0 x 10-7, Ka2 = 1.2 x 10-15[Ag(NH3)2]+ : Kf1 = 2.04 x 103, Kf2 = 8.13 x 103Consider the equilibrium reaction: YZ2(s) ⇌ Y2+(aq) + 2Z-(aq). What is the molar solubility of YZ₂ (Ksp= 4.0 x 10⁻¹¹) at 25⁰C in a 0.03 M AZ₂ solution? Assume that AZ₂ is a strong electrolyte.
- As part of a soil analysis on a plot of land, a scientist wants to determine the ammonium content using gravimetric analysis with sodium tetraphenylborate, Na+B(C6H5)4−. Unfortunately, the amount of potassium, which also precipitates with sodium tetraphenylborate, is non‑negligible and must be accounted for in the analysis. Assume that all potassium in the soil is present as K2CO3 and all ammonium is present as NH4Cl. A 5.095 g soil sample was dissolved to give 0.500 L of solution. A 150.0 mL aliquot was acidified and excess sodium tetraphenylborate was added to precipitate both K+ and NH4+ ions completely. B(C6H5)4-+K+⟶KB(C6H5)4(s) B(C6H5)4-+NH4+⟶NH4B(C6H5)4(s) The resulting precipitate amounted to 0.269 g. A new 300.0 mL aliquot of the original solution was made alkaline and heated to remove all of the NH4+ as NH3. The resulting solution was then acidified, and excess sodium tetraphenylborate was added to give 0.129 g of precipitate. Find the mass percentages of NH4Cl and…(a) If the molar solubility of Tl2S at 25 oC is 5.31e-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 BaCO3 at 25 oC is 2.58e-09. What is the molar solubility of BaCO3? solubility = ____ mol/LThe solubility of AgOH is 2 x 10-8 g/L a) Write a balanced equation for the solubility equilibrium b) Write the expression for the solubility product constant Ksp and calculate its value c) Calculate the pH of a saturated solution of AgOH d) 100 ml of 2.5 x 10-3 SOLUTION of Ag2S04 is added to 100 ml of 2.5 x 10-4 molar NaOH solution. Does a precipitate form? Explain and show calculations to support your answer