John Hogan Quiz 4 LSU Chemistry 1202. Please go into detail on how each answer is obtained as this will be used as a study guide. I will make sure to upvote.
John Hogan Quiz 4 LSU Chemistry 1202. Please go into detail on how each answer is obtained as this will be used as a stu...
Please answer both questions 1&2 and circle the answers 1. + 0/0.1 points Previous Answers 1/4 Submissions Used Calculate the molar solubility of Fe(OH)2 in a buffer solution where the pH has been fixed at the indicated values. Kan = 7.9 x 10°. (8) pH 70 1.99e-9 XM (b) pH 10.8 . Хм (c) pH 12.1 Хм HopHelpCh17N6 2. + -10.1 points 0/4 Submissions Used Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water...
29. -10.1 points 0/4 Submissions Used A solution of Na3AsO4 is added dropwise to a solution that is 0.0361 M in B13+ and 0.000122 M in Cd2+. The Ksp of BiAsO4 is 4.43e-10. The Ksp of Cd3(AsO4)2 is 2.2e-33. (a) What concentration of AsO43- is necessary to begin precipitation? (Neglect volume changes.) [A5043-) = M. (b) Which cation precipitates first? O Bi3+ OCd2+ (c) What is the concentration of AsO43- when the second cation begins to precipitate? [A5043-) =
+-/0.1 points 40. 0/4 Submissions Used (a) If the molar solubility of Ca3(PO4)2 at 25 °C is 4.53e-08 mol/L, what is the Ksp at this temperature? Ksp (b) It is found that 8.70e-09 g of Ga(OH)3 dissolves per 100 mL of aqueous solution at 25 °C. Calculate the solubility-product constant for Ga(OH)3 Ksp (c) The Ksp of Cd3(PO4)2 at 25 °C is 2.53e-33. What is the molar solubility of Cd3(PO4)2? solubility mol/L
help with all these please 10. A 25.0-mL sample of 0.150M hypochlorous acid is titrated with a 0.150 M NaOH solution. What is the pH after 13.3 mL of base is added? The Ka of hypochlorous acid is 3.0 x 10-8 A) 7.25 B) 1.34 C) 4.43 D) 7.58 E) 7.46 11. Calculate the pH and pOH of a solution that is 0.075 M HCN and 0.06 M NaCN. 12. The solubility of silver bromide is greater in 0.10 M...
1. 200 mL of an aqueous solution contains 0.030 M concentrations of both Pb2+ and Ag+. If 100 mL of 6.0 x 10-2 M NaCl is added to this solution will a precipitate form? If so, what will the precipitate be? The Ksp values for PbCl2 and AgCl are 1.7 x 10-5 and 1.8 x 10-10] 2. Which of the following is the expression for the solubility product of Ba3(AsO4)2? 3. The pKa of a weak acid is 6.50. What...
41. -/0.1 points 0/4 Submissions Used A solution of Na 3ASO4 is added dropwise to a solution that is 0.0219 M in Cu2+ and 0.0491 M in Ag+ The Ksp of Cu3(AsO4)2 is 7.95e-36. The Ksp of Ag3AsO4 is 1.03e-22. (a) What concentration of AsO43- is necessary to begin precipitation? (Neglect volume changes.) [AsO43- М. (b) Which cation precipitates first? Cu2+ Ag (c) What is the concentration of AsO43 when the second cation begins to precipitate? [AsO43- М.
26. + -10.1 points 0/4 Submissions Used Calculate [OH-] and pH for each of the following solutions. (a) 0.0054 M CSOH [OH-] = M pH = (b) 0.0136 g of KOH in 530.0 mL of solution [OH-] = M pH = (C) 15.2 mL of 0.00283 M Sr(OH)2 diluted to 1000 mL [OH-] = M pH = (d) A solution formed by mixing 81.0 mL of 0.000470 M Sr(OH)2 with 38.0 mL of 5.6 x 10-3 M CSOH [OH-] =...
28. -70.1 points 0/4 Submissions Used (a) If the molar solubility of YF3 at 25 °C is 4.23e-06 mol/L, what is the Ksp at this temperature? Ksp =D (b) It is found that 0.0628 g of BaF2 dissolves per 100 mL of aqueous solution at 25 °C. Calculate the solubility-product constant for BaF2. Ksp = (c) The Ksp of Ca3(PO4)2 at 25 °C is 2.05e-35. What is the molar solubility of Ca3(PO4)2? solubility = mol/L
21. + -10.1 points 0/4 Submissions Used Calculate the pH of each of the following strong acid solutions. (a) 0.00373 M HBr pH = (b) 0.319 g of HBrO4 in 10.0 L of solution pH = (C) 11.0 mL of 8.30 M HBr diluted to 2.00 L pH = (d) a mixture formed by adding 61.0 mL of 0.00320 M HBr to 50.0 mL of 0.00888 M HBrO4 pH =
A pH 4.88 buffer which was prepared by dissolving 0.10 mol of benzoic acid (Ka=6.3x10-5) and 0.50 mol of sodium benzoate in sufficient pure water to form a 1.00 L solution. A 2.00 mL of 2.00 M HI solution was added to a 70.0 mL aliquot of this solution. a) What was the pH of the new 72.0 mL solution. b) If 0.01 mol A13+ is added to this new solution, will Al3+ ion be separated as Al(OH)3(s) (Ksp =...