Chapter 17 Review Questions

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8) The concentration of iodide ions in a saturated solution of lead (II) iodide is __________ M. The solubility product constant of PbI2 is 1.4 × 10-8. A) 3.8 × 10-4 B) 1.5 × 10-3 C) 3.0 × 10-3 D) 1.4 × 10-8 E) 3.5 × 10-9 9) The solubility of manganese (II) hydroxide (Mn(OH)2) is 2.2 × 10-5 M. What is the Ksp of Mn(OH)2? A) 1.1 × 10-14 B) 4.8 × 10-10 C) 4.3 × 10-14 D) 2.2 × 10-5 E) 2.1 × 10-14 10) Calculate the maximum concentration (in M) of silver ions (Ag + ) in a solution that contains 0.025 M of CO3 2- . The Ksp of Ag2CO3 is 8.1 × 10-12. A) 2.8 × 10-6 B) 3.2 × 10-10 C) 8.1 × 10-12 D) 1.8 × 10-5 E) 1.4 × 10-6 11) What is the solubility (in M) of PbCl2 in a 0.15 M solution of HCl? The Ksp of PbCl2 is 1.6 × 10-5. A) 1.6 × 10-5 B) 2.0 × 10-3 C) 1.8 × 10-4 D) 7.1 × 10-4 E) 1.1 × 10-4 12) The Ksp for Zn(OH)2 is 5.0 × 10-17. Determine the molar solubility of Zn(OH)2 in a buffer solution with a pH of 11.5. A) 1.2 × 10-12 B) 5.0 × 106 C) 1.6 × 10-14 D) 5.0 × 10-12 E) 5.0 × 10-17 13) Which one of the following pairs cannot be mixed together to form a buffer solution? A) H3PO4, KH2PO4 B) NaC2H3O2, HCl (C2H3O2 - = acetate) C) RbOH, HBr D) KOH, HF E) NH3, NH4Cl 14) What change will be caused by addition of a small amount of HCl to a solution containing fluoride ions and hydrogen fluoride? A) The fluoride ions will precipitate out of solution as its acid salt. B) The concentration of hydronium ions will increase significantly. C) The concentration of fluoride ion will decrease and the concentration of hydrogen fluoride will increase. D) The concentration of hydrogen fluoride will decrease and the concentration of fluoride ions will increase. E) The concentration of fluoride ions will increase as will the concentration of hydronium ions. 15) Of the following solutions, which has the greatest buffering capacity? A) 0.100 M HF and 0.217 M NaF B) 0.821 M HF and 0.909 M NaF C) 0.821 M HF and 0.217 M NaF D) They are all buffer solutions and would all have the same capacity. E) 0.121 M HF and 0.667 M NaF 2
16) The addition of hydrofluoric acid and __________ to water produces a buffer solution. A) NaCl B) HCl C) NaNO3 D) NaF E) NaBr 17) The primary buffer system that controls the pH of the blood is the __________ buffer system. A) carbonate, carbonic acid B) carbonate, bicarbonate C) carbon dioxide, carbonate D) carbonic acid, carbon dioxide E) carbonic acid, bicarbonate 18) The pH of a solution prepared by mixing 45 mL of 0.183 M KOH and 65 mL of 0.145 M HCl is __________. A) 70.145 B) 1.31 C) 1.97 D) 2.92 E) 0.74 19) A 25.0 mL sample of a solution of an unknown compound is titrated with a 0.115 M NaOH solution. The titration curve above was obtained. The unknown compound is __________. A) a strong acid B) a weak acid C) a strong base D) a weak base E) neither an acid nor a base 20) The molar solubility of __________ is not affected by the pH of the solution. A) KNO3 B) Na3PO4 C) AlCl3 D) MnS E) NaF 21) In which of the following aqueous solutions would you expect AgCl to have the lowest solubility? A) 0.020 KCl B) 0.020 AgNO3 C) 0.020 M BaCl2 D) 0.015 NaCl E) pure water 3
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Chapter 17 Review Questions

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