Question 1 A reaction which has one compound as a reactant and two elements as products is: A. a decomposition reaction. B. a combination reaction. C. a single-displacement reaction. D. a double-displacement reaction. E. a combustion reaction. Question 2 A Brønsted-Lowry acid is defined as a ____. A. species that donates a proton B. species that accepts a proton C. species that accepts a share in an electron pair D. species that makes available a share in an electron pair E. species that produces H+ ions in aqueous solution Question 3 A solution of silver nitrate is mixed with a solution of sodium chloride, resulting in a precipitate of silver chloride and a solution of sodium nitrate. The class of this reaction is: A. decomposition reaction. B. combination reaction. C. single-displacement reaction. D. double-displacement reaction. E. combustion reaction. Question 4 The class of the reaction shown in the figure is: A. decomposition reaction. B. combination reaction. C. single-displacement reaction. D. double-displacement reaction. E. combustion reaction. Question 5 A piece of magnesium metal is burned in air (containing oxygen gas), and a white powder of magnesium oxide is formed. The class of this reaction is: A. decomposition reaction. B. combination reaction. C. single-displacement reaction. D. double-displacement reaction. E. combustion reaction. Question 6 Calculate the moles and the mass of solute in 250.0 mL of 6.00 M NaOH. A. 6.00 moles and 240. g B. 1.50 moles and 60.0 g C. 1.50 moles and 0.0375 g D. 6.00 moles and 0.0150 g E. 24.0 moles and 0.600 g Question 7 A reaction which has two compounds as reactants and two compounds as products is: A. a decomposition reaction. B. a combination reaction. C. a single-displacement reaction. D. a double-displacement reaction. E. a combustion reaction. Question 8 The following describe properties of substances. Which one is not a property of acids? A. They have a sour taste. B. They react with metal oxides to form salts and water. C. They react with other acids to form salts and water. D. Their aqueous solutions conduct an electric current. E. They react with active metals to liberate H2. Question 9 For which one of the pairs of acids and bases does the following represent the net ionic equation? H3O + + OH- --> 2H2O A. NaOH, HBr B. CH3COOH, Ca(OH)2 C. HNO3, Mg(OH)2 D. CH3COOH, Cu(OH)2 E. CH3COOH, Cr(OH)3 Question 10 A reaction which has one compound as a reactant and two elements as products is: A. a decomposition reaction. B. a combination reaction. C. a single-displacement reaction. D. a double-displacement reaction. E. a combustion reaction. Question 11 For the complete neutralization reactions between the following pairs of acid and bases, which pair is a soluble, strong base and a weak acid that react to form a soluble salt? A. Ca(OH)2, HNO3 B. KOH, H3PO4 C. NH3, HF D. Ba(OH)2, H2CO3 E. Fe(OH)2, H2S Question 12 Calculate the volume of 12.0 M HCl that would be required to obtain 3.00 moles of the solute. A. 250. L B. 250. mL C. 36.0 mL D. 36.0 L E. 9.11 L Question 13 Four of the following pairs of acids list the weaker acid at the left and the stronger acid at the right. Which pair is reversed? WEAK ACID STRONG ACID A. HIO3 HClO3 B. HNO2 HNO3 C. H3PO4 HNO3 D. H3PO4 H3AsO4 E. HBrO3 HClO3 Question 14 Which one of the following pairs of acids is incorrectly listed? stronger acid weaker acid A. HClO HClO2 B. HNO3 HNO2 C. H2SO4 H2SO3 D. H2SO3 H2SeO3 E. HClO4 HIO4 Question 15 Which one of the following is not a strong acid? A. HI B. HF C. HNO3 D. H2SO4 E. HClO3 Question 16 According to the Arrhenius theory, which of the following is an acid? A. NH3 B. CH4 C. HCl D. H2 E. NaOH Question 17 In the equation HF + H2O <-> H3O + + F- A. H2O is a base, and HF is its conjugate acid. B. H2O is an acid, and HF is the conjugate base. C. HF is an acid, and Fis its conjugate base. D. HF is a base, and H3O + is its conjugate acid. E. HF is a base, and Fis its conjugate acid. Question 18 In the reaction SnCl4 + 2Cl- <-> SnCl6 2- , the SnCl4 functions as a(an) ____. A. Brønsted-Lowry acid B. Brønsted-Lowry base C. Arrhenius base D. Lewis acid Question 19 When a piece of copper wire is placed in a colorless solution of silver nitrate, the surface of the wire becomes coated with a shiny silvery material, and the copper begins to form aqueous copper(II) nitrate, which is blue. Which of the following statements regarding this reaction is correct? A. The copper(II) is being oxidized. B. The silver ion is being oxidized. C. The nitrate ion is being reduced. D. The solution will become more blue as the reaction progresses. E. The reaction described is nonspontaneous. Question 20 Calculate the molarity of a solution consisting of 60.0 g of NaOH in 1.50 L of solution. A. 40.0 M B. 1.00 M C. 1.74 M D. 1.50 M E. 1.60 × 103 M Question 21 Which indication of relative acid strength is incorrect? A. HNO3 > HNO2 B. HI > HF C. H2PO4 - > HPO4 2- D. HClO3 > HBrO3 E. HClO > HCl Question 22 Calculate the volume of 6.00 M NaOH that would be required to obtain 2.50 moles of the solute. A. 15.0 L B. 0.417 mL C. 417 L D. 417 mL E. 15.0 mL Question 23 The class of the reaction shown in the figure is: A. decomposition reaction. B. combination reaction. C. single-displacement reaction. D. double-displacement reaction. E. combustion reaction. Question 24 Which one of the following pairs of acids and conjugate bases is incorrectly labeled or incorrectly matched? Acid Conjugate base A. HF F- B. HClO ClO- C. H2O OH- D. NH4 + NH2 - E. H3O + H2O Question 25 The class of the reaction shown in the figure is: A. decomposition reaction. B. combination reaction. C. single-displacement reaction. D. double-displacement reaction. E. combustion reaction. Question 26 The class of the reaction shown in the figure is: A. decomposition reaction. B. combination reaction. C. single-displacement reaction. D. double-displacement reaction. E. combustion reaction. Question 27 The class of the reaction shown in the figure is: A. decomposition reaction. B. combination reaction. C. single-displacement reaction. D. double-displacement reaction. E. combustion reaction. Question 28 Which of the following does not represent a conjugate acid-base pair? A. H2O/OH- B. H3O + /OH- C. HCl/Cl- D. HNO3/NO3 - E. NH4 + /NH3 Question 29 What is the conjugate base of the hydrogen sulfate ion, HSO4 - ? A. hydrogen sulfate (sulfuric acid), H2SO4 B. sulfate ion, SO4 2- C. hydronium ion, H3O + D. hydroxide ion, OH- E. none of the above Question 30 According to the Brønsted-Lowry theory, a base is defined as ____. A. an electron pair acceptor B. a proton acceptor C. an electron pair donor D. a proton donor E. any species that can produce hydroxide ions in aqueous solution

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