Chemistry
3rd Edition
ISBN: 9780321813732
Author: Tro, Nivaldo J.
Publisher: Pearson College Div
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Chapter 16, Problem 105E
Interpretation Introduction
Interpretation: The minimum concentration of KOH that is required for the precipitation to begin in each of the given solution:
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Chemistry
Ch. 16 - Prob. 1SAQCh. 16 - Q2. What is the pH of a buffer that is 0.120 M in...Ch. 16 - Q3. A buffer with a pH of 9.85 contains CH3NH2 and...Ch. 16 - Q4. A 500.0-mL buffer solution is 0.10 M in...Ch. 16 - Q5. Consider a buffer composed of the weak acid HA...Ch. 16 - Q6. Which combination is the best choice to...Ch. 16 - Q7. A 25.0-mL sample of an unknown HBr solution is...Ch. 16 - Q8. A 10.0-mL sample of 0.200 M hydrocyanic acid...Ch. 16 - Q9. A 20.0-mL sample of 0.150 M ethylamine is...Ch. 16 - Q10. Three 15.0-mL acid samples—0.10 M HA, 0.10 M...
Ch. 16 - Q11. A weak unknown monoprotic acid is titrated...Ch. 16 - Q12. Calculate the molar solubility of lead(II)...Ch. 16 - Q13. Calculate the molar solubility of magnesium...Ch. 16 - Q14. A solution is 0.025 M in Pb2 +. What minimum...Ch. 16 - Q15. Which compound is more soluble in an acidic...Ch. 16 - 1. What is the pH range of human blood? How is...Ch. 16 - 2. What is a buffer? How does a buffer work? How...Ch. 16 - 3. What is the common ion effect?
Ch. 16 - 4. What is the Henderson–Hasselbalch equation, and...Ch. 16 - 5. What is the pH of a buffer solution when the...Ch. 16 - 6. Suppose that a buffer contains equal amounts of...Ch. 16 - 7. How do you use the Henderson–Hasselbalch...Ch. 16 - 8. What factors influence the effectiveness of a...Ch. 16 - 9. What is the effective pH range of a buffer...Ch. 16 - 10. Describe acid–base titration. What is the...Ch. 16 - 11. The pH at the equivalence point of the...Ch. 16 - 12. The volume required to reach the equivalence...Ch. 16 - 13. In the titration of a strong acid with a...Ch. 16 - 14. In the titration of a weak acid with a strong...Ch. 16 - 15. The titration of a polyprotic acid with...Ch. 16 - 16. In the titration of a polyprotic acid, the...Ch. 16 - 17. What is the difference between the endpoint...Ch. 16 - 18. What is an indicator? How can an indicator...Ch. 16 - 19. What is the solubility product constant? Write...Ch. 16 - 20. What is molar solubility? How can you obtain...Ch. 16 - 21. How does a common ion affect the solubility of...Ch. 16 - 22. How is the solubility of an ionic compound...Ch. 16 - 23. For a given solution containing an ionic...Ch. 16 - 24. What is selective precipitation? Under which...Ch. 16 - 25. What is qualitative analysis? How does...Ch. 16 - 26. What are the main groups in the general...Ch. 16 - 27. In which of these solutions will HNO2 ionize...Ch. 16 - 28. A formic acid solution has a pH of 3.25. Which...Ch. 16 - 29. Solve an equilibrium problem (using an ICE...Ch. 16 - 30. Solve an equilibrium problem (using an ICE...Ch. 16 - 31. Calculate the percent ionization of a 0.15 M...Ch. 16 - 32. Calculate the percent ionization of a 0.13 M...Ch. 16 - 33. Solve an equilibrium problem (using an ICE...Ch. 16 - 34. Solve an equilibrium problem (using an ICE...Ch. 16 - 35. A buffer contains significant amounts of...Ch. 16 - 36. A buffer contains significant amounts of...Ch. 16 - Prob. 37ECh. 16 - Prob. 38ECh. 16 - 39. Use the Henderson–Hasselbalch equation to...Ch. 16 - 40. Use the Henderson–Hasselbalch equation to...Ch. 16 - 41. Calculate the pH of the solution that results...Ch. 16 - 42. Calculate the pH of the solution that results...Ch. 16 - 43. Calculate the ratio of NaF to HF required to...Ch. 16 - 44. Calculate the ratio of CH3NH2 to CH3NH3Cl...Ch. 16 - Prob. 45ECh. 16 - 46. What mass of ammonium chloride should you add...Ch. 16 - 47. A 250.0-mL buffer solution is 0.250 M in...Ch. 16 - 48. A 100.0-mL buffer solution is 0.175 M in HClO...Ch. 16 - Prob. 49ECh. 16 - 50. For each solution, calculate the initial and...Ch. 16 - Prob. 51ECh. 16 - 52. A 100.0-mL buffer solution is 0.100 M in NH3...Ch. 16 - 53. Determine whether or not the mixing of each...Ch. 16 - 54. Determine whether or not the mixing of each...Ch. 16 - 55. Blood is buffered by carbonic acid and the...Ch. 16 - 56. The fluids within cells are buffered by H2PO4–...Ch. 16 - 57. Which buffer system is the best choice to...Ch. 16 - Prob. 58ECh. 16 - 59. A 500.0-mL buffer solution is 0.100 M in HNO2...Ch. 16 - Prob. 60ECh. 16 - Prob. 61ECh. 16 - 62. Two 25.0-mL samples, one 0.100 M HCl and the...Ch. 16 - 63. Two 20.0-mL samples, one 0.200 M KOH and the...Ch. 16 - 64. The graphs labeled (a) and (b) show the...Ch. 16 - 65. Consider the curve shown here for the...Ch. 16 - 66. Consider the curve shown here for the...Ch. 16 - 67. Consider the titration of a 35.0-mL sample of...Ch. 16 - Prob. 68ECh. 16 - 69. Consider the titration of a 25.0-mL sample of...Ch. 16 - Prob. 70ECh. 16 - 71. Consider the titration of a 20.0-mL sample of...Ch. 16 - Prob. 72ECh. 16 - Prob. 73ECh. 16 - Prob. 74ECh. 16 - Consider the titration curves (labeled a and b)...Ch. 16 - Prob. 76ECh. 16 - Prob. 77ECh. 16 - 78. A 0.446-g sample of an unknown monoprotic acid...Ch. 16 - Prob. 79ECh. 16 - Prob. 80ECh. 16 - Prob. 81ECh. 16 - Prob. 82ECh. 16 - Prob. 83ECh. 16 - 84. Referring to Table 17.1, pick an indicator for...Ch. 16 - Prob. 85ECh. 16 - Prob. 86ECh. 16 - 87. Refer to the Ksp values in Table 17.2 to...Ch. 16 - 88. Refer to the Ksp values in Table 17.2 to...Ch. 16 - 89. Use the given molar solubilities in pure water...Ch. 16 - Prob. 90ECh. 16 - Prob. 91ECh. 16 - Prob. 92ECh. 16 - 93. Refer to the Ksp value from Table 17.2 to...Ch. 16 - Prob. 94ECh. 16 - 95. Calculate the molar solubility of barium...Ch. 16 - Prob. 96ECh. 16 - Prob. 97ECh. 16 - Prob. 98ECh. 16 - Prob. 99ECh. 16 - Prob. 100ECh. 16 - Prob. 101ECh. 16 - Prob. 102ECh. 16 - Prob. 103ECh. 16 - Prob. 104ECh. 16 - Prob. 105ECh. 16 - Prob. 106ECh. 16 - Prob. 107ECh. 16 - Prob. 108ECh. 16 - Prob. 109ECh. 16 - Prob. 110ECh. 16 - Prob. 111ECh. 16 - Prob. 112ECh. 16 - 113. A 150.0-mL solution contains 2.05 g of sodium...Ch. 16 - Prob. 114ECh. 16 - Prob. 115ECh. 16 - Prob. 116ECh. 16 - Prob. 117ECh. 16 - 118. A 250.0-mL buffer solution initially contains...Ch. 16 - 119. In analytical chemistry, bases used for...Ch. 16 - Prob. 120ECh. 16 - Prob. 121ECh. 16 - Prob. 122ECh. 16 - Prob. 123ECh. 16 - Prob. 124ECh. 16 - Prob. 125ECh. 16 - Prob. 126ECh. 16 - Prob. 127ECh. 16 - Prob. 128ECh. 16 - Prob. 129ECh. 16 - Prob. 130ECh. 16 - 131. The Kb of hydroxylamine, NH2OH, is 1.10 ×...Ch. 16 - 132. A 0.867-g sample of an unknown acid requires...Ch. 16 - Prob. 133ECh. 16 - Prob. 134ECh. 16 - 135. What relative masses of dimethyl amine and...Ch. 16 - Prob. 136ECh. 16 - Prob. 137ECh. 16 - Prob. 138ECh. 16 - 139. Since soap and detergent action is hindered...Ch. 16 - 140. A 0.558-g sample of a diprotic acid with a...Ch. 16 - 141. When excess solid Mg(OH)2 is shaken with 1.00...Ch. 16 - Prob. 142ECh. 16 - Prob. 143ECh. 16 - Prob. 144ECh. 16 - Prob. 145ECh. 16 - Prob. 146ECh. 16 - Prob. 147ECh. 16 - 148. What amount of HCl gas must be added to 1.00...Ch. 16 - 149. Without doing any calculations, determine if...Ch. 16 - 150. A buffer contains 0.10 mol of a weak acid and...Ch. 16 - Prob. 151ECh. 16 - Prob. 152ECh. 16 - Prob. 153E
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- The solubility of Mg(OH)2 in water is approximately 9.6 mg/L at a given temperature. Calculate the Ksp of magnesium hydroxide. Calculate the hydroxide concentration needed to precipitate Mg2+ ions such that no more than 5.0 μg Mg2+ per liter remains in the solution.arrow_forwardA solution contains 0.0150 M lead(II) ion. A concentrated sodium iodide solution is added dropwise to precipitate lead iodide (assume no volume change). a At what concentration of I does precipitate start to form? b When [I] = 2.0 103 M, what is the lead-ion concentration? What percentage of the lead(II) originally present remains in solution?arrow_forwardWhat mass of Ca(NO3O)2 must be added to 1.0 L of a 1.0-M HF solution to begin precipitation of CaF2(s)? For CaF2, Ksp = 4.0 1011 and Ka, for HF = 7.2 104. Assume no volume change on addition of Ca(NO3)2(s).arrow_forward
- Calculate the solubility (in grams per liter) of magnesium hydroxide in the following. (a) pure water (b) 0.041 M Ba(OH)2 (c) 0.0050 M MgCl2arrow_forwardA solution contains 0.00740 M calcium ion. A concentrated sodium fluoride solution is added dropwise to precipitate calcium fluoride (assume no volume change). a At what concentration of F does precipitate start to form? b When [F] = 9.5 104 M, what is the calcium-ion concentration? What percentage of the calcium ion has precipitated?arrow_forwardWhich of the following compounds precipitates from a solution that has the concentrations indicated? (See Appendix J for Ksp values.) (a) KClO4:[K+]=0.01M,[ClO4]=0.01M (b) K2PtCl6:[K+]=0.01M,[PtCl62]=0.01M (c) PBI2:[Pb2+]=0.003M,[I]=1.3103M (d) Ag2S:[Ag+]=11010M,[S2]=11013Marrow_forward
- A volume of 0.800 L of a 2104 -M Ba(NO3)2 solution is added to 0.200 L of 5104M Li2SO4. Does BaSO4 precipitate? Explain your answer.arrow_forwardA 3.20-L solution of 1.25 103 M Pb(NO3)2 is mixed with a 0.80-L solution of 5.0 101 M NaCl. Calculate Q for the dissolution of PbCl2. No precipitate has formed. Is the solution supersaturated, saturated, or unsaturated?arrow_forwardThe concentration of Mg2+ in seawater is 0.052 M. At what pH will 99% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 1012.]arrow_forward
- Each pair of ions below is found together in aqueous solution. Using the table of solubility product constants in Appendix J, devise a way to separate these ions by adding a reagent to precipitate one of the ions as an insoluble salt and leaving the other in solution. (a) Ba2+ and Na+ (b) Ni2+ and Pb2+arrow_forwardThe Ksp for lead iodide (PbI2) is 1.4 108. Calculate the solubility of lead iodide in each of the following. a. water b. 0.10 M Pb(NO3)2 c. 0.010 M NaIarrow_forward
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