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Consider a saturated solution of calcium fluoride in 0.092 M potassium nitrate. Complete the following tasks, and then answer the question. a) Write the chemical equation corresponding to Ksp. b) Write the defining expression for the thermodynamic solubility product constant, Kspo. c) Write the defining expression for the conditional solubility product constant, Ksp'. d) For the Ca2+ and F- ions, write the mathematical relations defining activity of each ion in terms of its concentration and activity coefficient. e) Based on your answers above, derive a relationship for Ksp' in terms of Kspo and activity coefficients, and calculate the value of Ksp', given that Kspo = 3.9 x 10-11. (Note: Compute the activity coefficient for each ion using the Debye-Huckel equation. You can disregard the contribution of the dissolved CaF2 to the overall ionic strength. Also disregard the formation of any HF in the equilibrium solution.) Question: Calculate the molar solubility of the calcium fluoride.
Sketch a series of titration curves for the titration of a strong acid with a strong base where the concentration of the acid is 10-1, 10-2, and 10-3 mol dm-3 respectively. Explain why the choice of indicators is restricted at different acid conce..
What is the concentration of an HCl solution if for 50.0 mL of HCl it took 55.1 mL of 0.0875 M NaOH to completely neutralize it.
Draw condensed structural formulas for the straight-chain alkanes with seven and eight carbons
describe how sp3 hybridization occurs in each atom. a) carbon b) nitrogen c) oxygen. If these elements use sp3 hybrid orbitals to form bonds, how many lone pairs of electrons would be found on each?
A constant electric current flows for 3.75 h through two electrolytic cells connected in series. One contains a solution of AgNO3 and the second a solution of CuCl2. During this time 1.50 g of silver are deposited in the first cell.
Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of Hydrogen gas are formed when 48.7g of sodium are added to water?
A 10.4-g sample of CaCl2 is dissolved in 107 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C ..
The result of doubling the inital concentration of x will be to? a) shroten the half-life of the reaction b) increase the rate of constant of the reaction c) decrease the rate constant of the reaction D) Shorten the time taken to reach equilibrium..
If the Ksp of KHT was determined experimentally to be 3.8E-4 at 25 C, calculate the mass of KHT needed to make 200 mL of saturated solution.
How many moles of CO(NH2)2 are present in 150 g of water, if the freezing point of the solution is -4.02C? kf(water) = 1.86 K · kg/mol.
In a gas mixture, the partial pressures are nitrogen 435 , oxygen 145 , and helium 240 . What is the total pressure ( torr) exerted by the gas mixture?
The following problem is based on the "Nutrition Facts" found on the wrapper of an energy bar, assuming a 2000 calorie diet. The energy bar contains 100 mg of sodium, which constitutes
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