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14.2   Algorithmic Questions 1) When dissolved in water, which compound is generally considered to be an Arrhenius acid? A) H NO2 B) KOH C) Li F D) CH3OH   2) Calculate the hydronium ion concentration in an aqueous solution that contains 2.50 × 10-6 M in hydroxide ion. A) 4.00 × 10-7 M B) 4.00.
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31) Which has the highest standard molar entropy at 25°C? A) F2(g) B) Cl2(g) C) Br2(g) D) I2(g) 32) Which of the following gas molecules has the greatest standard molar entropy at 25°C? A) C2H2 B) CH2CH2 C) CH3CH3 D) All have the same entropy. 33) Which substance has the highest standard molar entropy at 25°C ? A) C(graphite) B) C2H4(g) C).
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14.1   Multiple Choice Questions 1) An Arrhenius acid is best defined as a A) hydroxide donor. B) proton acceptor. C) substance that dissociates in water to produce aqueous hydrogen ions. D) substance that dissociates in water to produce aqueous hydroxide ions. 2) When dissolved in water, which of the following compounds is an Arrhenius acid? A) HCN B).
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47) What is the approximate pH of a solution X that gives the following responses with the indicators shown? Indicators HIn — In- pH range Solution X methyl orange red-yellow 3.2-4.4 yellow methyl red red-yellow 4.8-6.0 yellow bromthymol blue yellow-blue 6.0-7.6 green phenolphthalein colorless-pink 8.2-10.0 colorless A) 3.2 - 4.4     B) 4.8 - 6.0   C) 6.0 - 7.6 D) 8.2 - 10.0 48) What is the approximate pH of a solution X.
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13.3   Short Answer Questions 1) A reaction in which reactants form products in the forward reaction and products simultaneously form reactants in the reverse reaction is said to be ________. 2) In a reversible reaction, when the rate of the forward reaction equals the rate of the reverse reaction, the reaction is.
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In the following reaction the unshaded spheres represent H atoms.     136) Identify the Brønsted-Lowry acid/base conjugate pairs. A) (1)/(2) and (3)/(4) B) (1)/(3) and (2)/(4) C) (1)/(4) and (2)/(3) The following pictures represent aqueous solutions of three acids HA (A = X, Y, or Z); water molecules have been omitted for clarity.     137) Arrange.
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16.1   Multiple Choice Questions 1) Which of the following statements is not true? A) The reverse of a spontaneous reaction is always nonspontaneous. B) A spontaneous process always moves toward equilibrium. C) A nonspontaneous process cannot be caused to occur. D) A highly spontaneous process need not occur rapidly. 2) Which forward reaction is a nonspontaneous.
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127) Which one of the following is least able to behave as a Lewis base? A) CH3NH2 B) (CH3)2NH C) (CH3)3N D) (CH3)3NH+ 128) The compound BF3 can be described as a(n) A) Arrhenius acid. B) Brønsted-Lowry acid. C) Lewis acid. D) Lewis base. 129) Identify the set of Lewis acids. A) BH3, BF3, Cu2+, CO2 B) Cl-, OH-, NH3, H2O C) H3PO4,.
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21) Assume a heteronuclear diatomic molecule, AB, forms a one-dimensional crystal by lining up along the x-axis. Also assume that each molecule can only have one of six possible orientations, corresponding to atom A facing in either the positive or negative direction along the x-, y-, or z-axis. If the.
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21) From the following chemical reactions determine the relative Brønsted-Lowry acid strengths (strongest to weakest). HCl(aq) + H2O(l) → H3O+(aq) + Cl-(aq) HCN(aq) + H2O(l) ? H3O+(aq) + CN-(aq) A) HCl > HCN > H3O+ B) HCl > H3O+ > HCN C) H3O+ > HCl > HCN D) HCN > H3O+ > HCl 22) From the following.
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The following pictures represent solutions that contain a weak acid HA (pKa = 5.0) and its potassium salt KA. Unshaded spheres represent H atoms, black spheres represent oxygen atoms, and shaded spheres represent A- ions. (K+, H3O+ initially present, OH- initially present and solvent water molecules have been omitted for.
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Use the graphs below to answer the following questions.     117) What is the characteristic pH-titrant curve for the titration of a strong acid by a strong base? A) A B) B C) C D) D 118) What is the characteristic pH-titrant curve for the titration of a strong base by a strong acid? A) A B) B C) C D).
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81) Which of the following reactions are not consistent with the concept of acid base amphoterism? A) Al(OH)3(s) + OH-(aq) → Al(OH)4-(aq) B) Al(OH)3(s) + 3 H3O+(aq) → Al3+(aq) + 6 H2O(l) C) H2O(l) + H2O(l) ? H3O+(aq) + OH-(aq) D) Al(OH)3(s) ? Al3+(aq) + 3 OH-(aq) 82) Precipitation of an ionic compound will occur.
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11) What are the conjugate acid-base pairs in the following chemical reaction NH3(aq) + H2O(l) ? NH4+(aq) + OH-(aq)? A) NH3, H2O and NH4+, OH- B) NH3, NH4+ and H2O, OH- C) NH3, OH- and H2O, NH4+ D) NH3 and NH4+ 12) Identify the conjugate acid/base pairs present in an aqueous solution of hydrogen sulfate.
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15.3   Short Answer Questions 1) The balanced net ionic equation for the neutralization reaction involving equal molar amounts of HNO3 and KOH is ________. 2) The balanced net ionic equation for the neutralization reaction involving equal molar amounts of HCl and CH3CH2NH2 is ________. 3) The solution formed upon adding 50.00 mL of 0.10.
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61) The balanced equation for the solubility equilibrium of Fe(OH)2 is shown below.  What is the equilibrium constant expression for the Ksp of Fe(OH)2? A) Ksp = {[Fe2+][OH-]2}/{[Fe(OH)2][H2O]} B) Ksp = {[Fe2+][OH-]2}/[Fe(OH)2] C) Ksp = [Fe2+][OH-]2 D) Ksp = 1/{[Fe2+][OH-]2} 62) What is the equilibrium constant expression for the Ksp of Ca3(PO4)2? A) Ksp =.
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71) Which of the following are unstable with respect to their constituent elements at 25°C? A) C8H18(l), CH3OH(l) B) C8H18(l), C2H2(g) C) C2H2(g) D) CH3OH(l) 72) In general, as a reaction goes to equilibrium A) ΔG decreases. B) ΔG°f decreases. C) ΔG goes to zero. D) ΔG° decreases. 73) At 25°C, ΔG° = -198 kJ for the reaction, NO(g) +.
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The following pictures represent solutions of CuS, which may also contain ions other than Cu2+ and S2- which are not shown. Gray spheres represent Cu2+ ions and dotted spheres represent S2- ions.     134) If solution (1) is a saturated solution of CuS, which of solutions (2)-(4) are unsaturated? A) only (2) B) only.
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The following pictures represent solutions that contain a weak acid HA and/or its potassium salt KA. Unshaded spheres represent H atoms and shaded spheres represent A- ions. (K+, H3O+, OH-, and solvent H2O molecules have been omitted for clarity.) 93) Which solution has the highest pH? A) (1) B) (2) C) (3) D) (4) 94) Which.
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97) Methylamine CH3NH2, has a base dissociation constant of 3.7 × 10-4. What is the conjugate acid of methylamine and what is its acid dissociation constant? A) CH3NH3+, 2.7 × 103 B) CH3NH3+, 3.7 × 10-4 C) CH3NH3+, 2.7 × 10-11 D) CH3NH2-, 2.7 × 10-11 98) Acetic acid CH3COOH, has an acid dissociation constant.
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117) Which acid of the following set has the strongest conjugate base? A) CH4 B) NH3 C) H2O D) HF 118) What is the strongest base among the following? A) ClO- B) ClO2- C) ClO3- D) ClO4- 119) What is the strongest acid among the following? A) H2SO3 B) H2SO4 C) H2SeO3 D) H2SeO4 120) What is the strongest acid of the following? A) HOI B) HOBr C).
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14.3   Short Answer Questions 1) The Brønsted-Lowry acid in the chemical equation below is _________. HNO2(aq) + H2O(l) ? H3O+(aq) + NO2–(aq) 2)  The equilibrium constant for the reaction below has the value Ka = 3.5 × 10–4.  In this reaction the Brønsted-Lowry acid is ________. HF(aq) + H2O(l) ? H3O+(aq) + F–(aq) 3) A.
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41) According to the second law of thermodynamics, all reactions proceed spontaneously in the direction that increases the entropy of the A) surroundings. B) system. C) system – surroundings D) system + surroundings 42) For a process to be at equilibrium, it is necessary that A) ΔSsys = ΔSsurr. B) ΔSsys = - ΔSsurr. C) ΔSsys = 0. D).
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