Write the eauilibrium constant expressions (Ka, Kb, Kw and Kc), for the following reactions. (REVISION) a. C(s) + O2(8) = CO:(8) b. C3Ha(g) + 502 (g) = 3C02(g) + 4H;O(g) c. HCI(aq) + H2O(1) = CI(aq) + H3O'(aq)
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- If 500mL of 0.10M Ca2+ is mixed with 500mL of 0.10M SO42-, what mass of calcium sulfate will precipitate? Ksp for CaSO4 is 2.40 • 10-5. express answer to 3 significant figures. And include units.If the Ksp for the dissolution of barium phosphate is 6.00*10^-39 then what is the equilibrium concentration of barium cations in solution if excess barium phosphate is added to water? Give typing answer with explanation and conclusionIt was determined by spectrophotometry that the moles of FeSCN2+ present at equilibrium was 2.00 x 10-4 moles (2.00 times 10 to the minus 4th power moles). If the sample was prepared using 4.00 x 10-3 moles (4.00 times 10 to the minus 3rd power moles) of Fe3+, how many moles of Fe3+ were present at equilibrium?
- Thallium(I) iodate (TlIO3) is only slightly soluble in water. Its Ksp at 25°C is 3.07 × 10-6 . Estimate the solubility of thallium(I) iodate in water in units of grams per 100.0 mL of water.Consider the reaction of 25.0 mL of 0.20 M AgNO3(aq) with 25.0 mL of 0.20 M NaBr(aq) to form AgBr(s) at 25 °C. What is ΔG for this reaction? The Ksp of AgBr is 5.0 × 10-13 at 25 °COne mixes aqueous NaCl with aqueous AgNO3. NaCl. AgNO3and NaNO3all have appreciable solubility in water. AgCl has a solubility product constant Ksp of 1.6 x 10-10. If one mixes the NaCl solution with the AgNO3solution, one would suspect: a) no precipitate will form b) AgCl precipitate will form c) NaNO3 precipitate will form d) both AgCl and NaNO3 precipitates will form
- Hexanoic acid was added to an immiscible biphasic solvent system, water and CCl4 at 20.0OC and the equilibrium concentrations of hexanoic acid were determined to be 3.66 g/L in H2O and 67.0 g/L in CCl4. Caluclate the distrubution coeffiecent (D2) of hexanoic acid in water with respect to CCl4.1.1The Ksp of Ca3 (PO4 ) 2 is 1.3 × 10−26 . Estimate the solubility of this salt in units of g. L −1 . You must show any reaction equation(s) that you may think are necessary. 1.2 If a sample of solid Ca3(PO4)2 is stirred into exactly one litre of a 0.550M solution of Na3PO4, how will the solubility of the salt compare with the answer that you have obtained in question 1.1? Explain you answer in a short sentence.MnSO4•H2O is soluble in water at 25°C, with a solubility of 70.0 g per 1000 g of solution. A saturated solution of MnSO4•H2O has a density of 1.02 g mL-1. When MnSO4•H2O dissolves in water, it absorbs roughly 3.05 kJ/mol of energy. MnSO4•H2O = 169.03 g/mol; H2O = 18.02 g/mol; MW: MnSO4•H2O = 169.03 g/mol. Which of the following is TRUE about a 0.32 M solution of MnSO4•H2O in water? a. A 0.32 M solution contains 70.0 g MnSO4•H2O b. A 0.32 M solution of MnSO4•H2O is unsaturated c. A 0.32 M solution of MnSO4•H2O is supersaturated d. A 0.32 M solution of MnSO4•H2O is saturated
- MnSO4•H2O is soluble in water at 25°C, with a solubility of 70.0 g per 1000 g of solution. A saturated solution of MnSO4•H2O has a density of 1.02 g mL-1. When MnSO4•H2O dissolves in water, it absorbs roughly 3.05 kJ/mol of energy. MnSO4•H2O = 169.03 g/mol; H2O = 18.02 g/mol; MW: MnSO4•H2O = 169.03 g/mol. What is the mole fraction of MnSO4•H2O in its saturated solution?An aqueous waste stream that has a maximum concentrationof 0.50 M H₂SO₄ (d=1.030 g/mL at 25C) will be neutralized by controlled addition of 40% caustic soda (NaOH; d=1.430 g/L) before it goes to the process sewer and then to the chemical plant waste treatment facility. However, a safety re-view finds that the waste stream could meet a small stream of animmiscible organic compound, which could form a flammable vapor in air at 40.°C. The maximum temperature of the causticsoda and the waste stream is 31°C. Could the temperature in-crease due to the heat of neutralization cause the vapor to ex-plode? Assume the specific heat capacity of each solution is 4.184 J/gK.Part b As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively. A sparingly soluble salt, Herbigon is dissolved in 1 M acetic acid for technical reasons having to do with its production. You have determined that the solubility product Ksp of Herbigon is 9.00×10-6 Although the formula of this new chemical is a trade secret, it can be revealed that the formula for Herbigon is X-acetate (XCH COO, where "X" represents the top-secret cation of the salt). It is this cation that kills weeds. Since it is critical to have Herbigon dissolved (it won't kill weeds as a suspension), you are working on adjusting the pH so Herbigon will be soluble at the concentration needed to kill weeds. What pH must the solution have to yield a solution in which the concentration of X* is 4.00×10-3 M? The pKa of acetic acid is 4.76.
