ACS Exam - General Chemistry II Sample Test bank Page 1of...

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General Chemistry II Sample Test bank Page 1of 18 1. According to the Bronsted—Lowry definition, which chemical species can function both as an acid and as a base? a. Cl b. SO 4 2— c. NH 4 + d. HCO 3 e. H 3 O + 2. In the reaction CN + H 2 O !" HCN + OH which is an acid—base conjugate pair? a. H 2 O and HCN b. H 2 O and OH c. CN and H 2 O d. HCN and OH 3. Given that HX is a stronger Bronsted acid than HY in aqueous solution, which is true of a 1 M solution of NaX a. It is less basic than a 1 M solution of NaY. b. It is more basic than a 1 M solution of NaY. c. It yields a neutral solution. d. It is more concentrated than a 1 M solution of NaY. 4. The pH of a 0.03 M HCl solution is a. 1.5 b. 2.5 c. 3.5 d. 12.5 5. The pH of a 1.0 x 10 —3 M Ba(OH) 2 solution at 25 o C is a. 2.7 b. 3.0 c. 11.0 d. 11.3 6. Which is the strongest acid? a. HClO b. HClO 2 c. HClO 3 d. HClO 4 7. Which salt reacts with water (hydrolyzes) to produce a basic solution? a. NaC 2 H 3 O 2 b. NaNO 3 c. NH 4 Cl d. BaSO 4 8. The weakest of the bases listed is Acid Conjugate Base Ka (Ionization Constant of Acid) HCl Cl 100% ionized HSO 4 SO 4 2— 1.2 x 10 -2 H 2 S HS 5.7x10 -8 HS S 2— 1.2x10 -13 a. Cl b. CN c. HS d. S 2— e. SO 4 2— 9. The oxide of which element will react with water to form the strongest acid? Main Groups Period I II II I IV V VI VII O First Second X Y Z P Q S U Third W R T M a. W b. M c. P d. R e. Z 10. Which statement is a logical inference from the fact that a 0.10 M solution of potassium acetate KC 2 H 3 O 2 , is less alkaline than a 0.10 M solution of potassium cyanide, KCN? a. Hydrocyanic acid is a weaker acid than acetic acid. b. Hydrocyanic acid is less soluble in water than acetic acid. c. Cyanides are less soluble than acetates d. Acetic acid is a weaker acid than hydrocyanic acid 11. In the titration of 50.0 mL of 0.100 M benzoic acid (a monoprotic acid) with 50.0 mL of 0.100 M NaOH, the properties of the solution at the equivalence point will correspond exactly to the properties of a. a 0.100 M sodium solution. b. a 0.0500 M sodium hydroxide solution. c. a 0.0500 M benzoic acid solution. d. a 0.0500 M sodium benzoate solution.
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General Chemistry II Sample Test bank Page 2of 18 12. A mixture of which pair of 0.1 M aqueous solutions would constitute a buffer? a. NaOH and NaCl b. HCl and NaOH c. HCl and NaCl d. NH 3 and NH 4 NO 3 13. What do these have in common? 20 Ne 19 F 1- 24 Mg 2+ a. the same number of protons b. the same number of neutrons c. the same number of electrons d. the same size 14. The number of neutrons in the nucleus of an atom of 13 27 Al is a. 40 b. 13 c. 27 d. 14 e. 9 15. The orbitals of 2p electrons are often represented as being a. elliptical. b.
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ACS Exam - General Chemistry II Sample Test bank Page 1of...

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