What volume of 0200 m koh must be added to 175 ml of

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Chapter 12 / Exercise 12.97
Chemistry for Engineering Students
Brown/Holme
Expert Verified
64. What volume of 0.200 M KOH must be added to 17.5 mL of 0.135 M H 3 PO 4 to reach the third equivalence point? A) 3.94 mL B) 11.8 mL C) 17.5 mL D) 23.6 mL E) Ans: E Difficulty: E 35.4 mL
65. A sample of a monoprotic acid (HA) weighing 0.384 g is dissolved in water and the solution is titrated with aqueous NaOH. If 30.0 mL of 0.100 M NaOH is required to reach the equivalence point, what is the molar mass of HA? 211 g/mol Difficulty: M
66. When 0.300 g of a diprotic acid was titrated with 0.100 M LiOH, 40.0 mL of the LiOH solution was needed to reach the second equivalence point. Identify the formula of the diprotic acid. H 2 Te Difficulty: H
67. What volume of 0.500 M H 2 SO 4 is needed to react completely with 20.0 mL of 0.400 LiOH? M 32.0 mL Difficulty: E
68. A change in pH will significantly affect the solubility of which, if any, of the following compounds? A) BaF 2 B) CuCl C) CuBr D) AgI E) None of the solubilities will be significantly affected. Ans: A Difficulty: H
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Chemistry for Engineering Students
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Chapter 12 / Exercise 12.97
Chemistry for Engineering Students
Brown/Holme
Expert Verified
Chapter 19: Ionic Equilibria in Aqueous Systems 69. The solubility of aluminum hydroxide in water ______________ when dilute nitric acid is added to it. Difficulty: M
70. A saturated solution of calcium hydroxide, Ca(OH) 2 , is in contact with excess solid Ca(OH) 2 . Which of the following statements correctly describes what will happen when aqueous HCl (a strong acid) is added to this mixture, and system returns to equilibrium? (For Ca(OH) 2 , K sp = 6.5 10 -6 )) Difficulty: M
71. The solubility of silver chloride _______________ when dilute nitric is added to it.
72. Write the ion product expression for magnesium fluoride, MgF 2 . A) 2 [Mg ][F ] + - D) 2 1 [Mg ][F ] + - B) 2 2 [Mg ][F ] + - E) 2 2 1 [Mg ][F ] + - C) 2 2 2 [Mg ][F ] [MgF ( )] s + - Ans: B Difficulty: E
73. Write the ion product expression for silver sulfide, Ag 2 S.
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Chapter 19: Ionic Equilibria in Aqueous Systems B) 2 2 [Ag ][S ] + - E) 2 2 [Ag ] [S ] + - C) 2 2 2 [Ag ] [S ] [Ag S( )] s + - Ans: E Difficulty: E

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