110年 - 110 亞洲大學_學士後招生考試_獸醫學系︰化學(含普通化學、有機化學)#100317

科目：研究所、轉學考(插大)◆化學(含普通化學、有機化學) | 年份：110年 | 選擇題數：80 | 申論題數：0

試卷資訊

所屬科目：研究所、轉學考(插大)◆化學(含普通化學、有機化學)

選擇題 (80)

1. Gasoline is an example of (A) a compound. (B) an element. (C) a heterogeneous mixture. (D) a homogeneous mixture.

2. How many significant figures are in the measurement, 0.0005890 g? (A) 4 (B) 5 (C) 6 (D) 7

3. Which of the following elements is a metalloid? (A) Al (B) Ge (C) C (D) Sn

4. Which of the following does NOT describe a nonmetal? (A) Tend to gain electrons (B) Found in the upper right hand corner of the periodic table (C) Poor conductor of electricity (D) Nonmetals are generally unreactive.

5. Determine the name for H₂CO₃. (A) carbonous acid (B) dihydrogen carbonate (C) carbonic acid (D) hydrocarbonic acid

6. The chemical formula for calcium nitride is (A) Ca(NO₃)₂. (B) Ca(NO₂)₂. (C) Ca₃N₂. (D) CaN₂

7. How many of the following compounds are insoluble in water?

KC₂H₃O₂ CaSO₄ SrS AlPO₄ (A) 0 (B) 1 (C) 2 (D) 3

8. The mixing of which pair of reactants will result in a precipitation reaction? (A) CsI(aq) + NaOH(aq) (B) HCl(aq) + Ca(OH)₂(aq) (C) K₂SO₄(aq) + Hg₂(NO₃)₂(aq) (D) NaNO₃(aq) + NH₄Cl(aq)

9. Which of the gases in the graph below has the largest molar mass?

(A) A (B) B (C) C (D) D

10. Which of the following gases has the highest average speed at 400K? (A) N₂ (B) O₂ (C) F₂(D) Cl₂

11. Which of the following processes is endothermic? (A) The freezing of water. (B) The vaporization of rubbing alcohol. (C) A hot cup of coffee (system) cools on a countertop (D) The chemical reaction in a "hot pack" often used to treat sore muscles.

12. An exothermic reaction has (A)has a negative ΔH and absorbs heat from the surroundings. An exothermic reaction feels warm to the touch . (B)has a positive ΔH and absorbs heat from the surroundings. An exothermic reaction feels warm to the touch . (C)has a positive ΔH and gives off heat to the surroundings. An exothermic reaction feels warm to the touch. (D)has a negative ΔH and gives off heat to the surroundings. An exothermic reaction feels warm to the touch.

13. Place the following types of electromagnetic radiation in order of increasing frequency. (A) microwaves ＜ visible light ＜ X-rays (B) X-rays ＜ visible light ＜ microwaves (C) microwaves ＜ X-rays ＜ visible light (D) X-rays ＜ microwaves ＜ visible light

14. Describe the shape of one of the d orbitals. (A) four lobes in one plane (B) three lobes in one plane (C) two lobes in one plane (D) one sphere

15. Give the ground state electron configuration for I. (A) [Kr]5s24d105p6 (B) [Kr]5s24d105p5 (C) [Kr]4d105p6 (D) [Kr]5s25p6

16. Of the following, which atom has the largest atomic radius? (A) Rb (B) I (C) Cs (D) At

17. Choose the compound below that should have the lowest melting point according to the ionic bonding model. (A) LiF (B) NaCl (C) CsI (D) KBr

18. Using periodic trends, place the following bonds in order of increasing ionic character. (A) Si-P ＜ Si-Cl ＜ Si-S (B) Si-P ＜ Si-S ＜ Si-Cl (C) Si-S ＜ Si-Cl ＜ Si-P (D) Si-Cl ＜ Si-P ＜ Si-S

19. How many of the following molecules are polar?

PCl₅ COS XeO₃ SeBr₂ (A) 2 (B) 0 (C) 1 (D) 3

20. Using the VSEPR model, the molecular geometry of the central atom in SO₂ is ________. (A) linear (B) trigonal planar (C) tetrahedral (D) bent

21. What is the strongest type of intermolecular force present in CHF₃? (A) ion-dipole (B) dispersion (C) hydrogen bonding (D) dipole-dipole

22. Which of the following compounds exhibits only dispersion and dipole-dipole intermolecular interactions? (A) H₂ (B) HI (C) CO₂ (D) CH₃NH₂

23. Which of the following compounds will be most soluble in ethanol (CH₃CH₂OH)? (A) trimethylamine (N(CH₃)₃) (B) acetone (CH₃COCH₃) (C) ethylene glycol (HOCH₂CH₂OH) (D) hexane (CH₃CH₂CH₂CH₂CH₂CH₃)

24. Which of the following ions should have the most exothermic ΔHhydration? (A) (B) (C) (D)

25. Given the following proposed mechanism, predict the rate law for the overall
reaction.
2NO₂ + Cl₂ → 2NO₂Cl (overall reaction)
Mechanism
NO₂ + Cl₂ → NO₂Cl + Cl slow
NO₂ + Cl → NO2Cl fast(A) Rate = k[NO₂][Cl₂] (B) Rate = k[NO₂]²[Cl₂](C) Rate = k[NO₂][Cl] (D) Rate = k[NO₂Cl][Cl]

26. Identify an homogeneous catalyst. (A) SO₂ over vanadium (V) oxide (B) Pd in H₂ gas (C) Pt with methane (D) H₂SO₄ with concentrated HCl

27. Consider the following reaction and its equilibrium constant:

I2(g) ⇌ 2I(g) Kp = 0.209

A reaction mixture contains 0.89 atm I2 and 1.77 atm I. Which of the following statements is TRUE concerning this system? (A) The reaction will shift in the direction of reactants. (B) The reaction quotient will increase. (C) The reaction will shift in the direction of products. (D) The equilibrium constant will decrease.

28. Consider the following reaction at equilibrium. What effect will increasing the
temperature have on the system?
C₃H₈(g) + 5 O₂(g) ⇌ 3 CO₂(g) + 4 H₂O(l) ΔH° = -2220 kJ(A) The reaction will shift to the right in the direction of products.(B) The reaction will shift to the left in the direction of reactants.(C) The equilibrium constant will increase.(D) The equilibrium constant will decrease.

29. Which of the following is a STRONG base? (A) Cl- (B) NH₃ (C) CH₃OH (D) KOH

30. Which one of the following salts, when dissolved in water, produces the solution with the most acidic pH? (A) NaCl (B) KCl (C) MgCl₂ (D) AlCl₃

31. If the pKa of HCHO₂ is 3.74 and the pH of an HCHO₂/NaCHO₂ solution is 3.89, which of the following is TRUE? (A) [HCHO₂] ＜ [NaCHO₂] (B) [HCHO₂] = [NaCHO₂] (C) [HCHO₂] ＞ [NaCHO₂] (D) [HCHO₂] ＞＞ [NaCHO₂]

32. When titrating a strong monoprotic acid and KOH at 25°C, the (A) pH will be less than 7 at the equivalence point. (B) pH will be greater than 7 at the equivalence point. (C) titration will require more moles of base than acid to reach the equivalence point. (D) pH will be equal to 7 at the equivalence point.

33. Consider a reaction that has a positive ΔH and a negative ΔS. Which of the following statements is TRUE? (A) This reaction will be spontaneous only at high temperatures. (B) This reaction will be spontaneous at all temperatures. (C) This reaction will be nonspontaneous at all temperatures. (D) This reaction will be nonspontaneous only at high temperatures.

34. Which of the following statements is TRUE? (A) Entropy is an extensive property. (B) Entropy is not temperature dependent. (C) Exothermic processes decrease the entropy of the surroundings. (D) ΔSuniverse is always greater than zero for a nonspontaneous process.

35. Balance the following redox reaction if it occurs in acidic solution. What are the coefficients in front of H⁺ and in the balanced reaction?

(A) (B) (C) (D)

36. What element is being oxidized in the following redox reaction?

(A) Cr (B) O (C) H (D) Cl

37. Which particle has the highest penetrating power? (A) Alpha particle. (B) Beta particle. (C) Gamma particle. (D) Positron emission.

38. The following reaction represents what nuclear process?

(A) beta emission (B) gamma emission (C) electron capture (D) neutron bombardment

39. Which functional groups have correct Lewis structures?

(A) I, II (B) II, III (C) I, II, III (D) I, III

40. What are the correct orbital hybridizations for carbon in the following species?

(A) CH₃ ⁺ is sp-hybridized (B)

(C) CH₄ is sp² -hybridized (D)

41. What is the role of methanol (CH₃OH) in the following reaction?

(A) Lewis acid (B) Lewis base (C) Brønsted acid (D) Brønsted base

42. Which is the proper reaction mechanism for the reaction of boron trifluoride and diethyl ether?

(A) I (B) II (C) III (D) IV

43. Which of the following are constitutional isomers of 4-isopropyloctane?
I. 3-ethyl-2,4,5-trimethyloctane II. isobutylcyclohexane
III. 4-ethyl-2,2-dimethylheptane IV. 4-ethyl-2-methyloctane(A) I, IV (B) II, III (C) I, II (D) III, IV

44. Which is the structure for trans-1-ethyl-3-isopropylcyclohexane?

(A)I (B) II (C) III (D) IV

45. Which is the correct structure for vinylcyclobutane?

(A) I (B) II (C) III (D) IV

46. Arrange the following compounds in decreasing order of boiling point (highest first).

(A) I, IV, II, III (B) II, IV, III, I (C) III, IV, II, I (D) IV, II, III, I

47. Arrange these carbocations in order of increasing stability (least to most).

(A) I, II, III, IV (B) III, II, I, IV (C) II, IV, I, III (D) III, I, II, IV

48. Which is the major product from the reaction of 1,2-dimethylcyclohexene with Br₂?

(A) I and III (B) II and IV (C) II and III (D) III and IV

49. Which compounds have multiple stereocenters?

(A) I, II (B) III, IV (C) II, III (D) I, III

50. Which compound is a meso compound?

(A) I (B) II (C) III (D) IV

51. Arrange the leaving groups in order of increasing leaving group ability (least first).

(A) IV, I, III, II (B) III, I, IV, II (C) II, IV, I, III (D) II, III, I, IV

52. Which of the reactions below are most likely to be reactions?

(A) I, II (B) II, III (C) III, IV (D) I, IV

53. Arrange the compounds in the order of increasing solubility in water (least soluble first). (help: estimate the hydrophobic surface of the non-polar part of the molecules)

(A) III, IV, II, I (B) II, III, IV, I (C) IV, III, II, I (D) III, IV, I, II

54. Which reagents do not perform the following conversion?

(A) I, II (B) II, III (C) II, IV (D) I, III

55. Arrange the compounds in order of decreasing reactivity towards the aromatic nitration reaction.

(A) II ＞ III ＞ IV ＞ I (B) III ＞ II ＞ I ＞ IV (C) II ＞ I ＞ III ＞ IV (D) IV ＞ II ＞ III ＞ I

56. Which is the major product of the following reaction?

(A) I (B) II (C) III (D)IV

57. Arrange the basicities of the four amines in decreasing order (highest first).

(A) II, III, I, IV (B) IV, III, II, I (C) I, III, IV, II (D) III, IV, I, II

58. The following mixture was extracted with 1 M HCl, followed by 1 M NaOH, followed by ether. Which compound is recovered from the acid solution?

(A) I (B) II (C) III (D) None of the above

59. Which is the correct structure for 2-hydroxybenzophenone?

(A) I (B) II (C) III (D) IV

60. Which is the major product of the following reaction?

(A) I (B) II (C) III (D) IV

61. Which reactions yield the same carboxylic acid?

(A) I, II, IV (B) I, III, IV (C) II, III, IV (D) I, II, III

62. Arrange the compounds in order of increasing acidity (lowest first).

(A) III, II, I, IV (B) I, II, IV, III (C) II, III, IV, I (D) II, I, III, IV

63. Which acid is strongest? (A) I (B) II (C) III (D) IV

64. Butyrolactone reacts with isobutyl magnesium bromide. Which is the major product formed?

(A) I (B) II (C) III (D) IV

65. The following reaction is fastest when Z is which group?

(A)I (B) II (C) III (D) IV

66. Which are contributing structures of the enolates formed by the treatment of butanone with base?

(A) II, IV, V (B) I, III, V (C) III, IV, V (D) I, III, IV

67. Which is the major product formed in the following reaction?

(A) I (B) II (C) III (D) IV

68. How many possible Claisen condensation products are formed when ethyl propanoate and ethyl methanoate are mixed with sodium ethoxide? (A) 1 (B) 2 (C) 3 (D) 4

69. Which is the correct structure for D-glyceraldehyde?

(A) I (B) II (C) III (D) IV

70. What is the relationship between the following compounds?

(A) anomers (B) diastereomers (C) enantiomers (D) identical structures

71. Which is the correct structure for α-D-glucopyranose?

(A) I and II (B) III and IV (C) III (D) I

72. Which amino acid has a basic side chain?

(A) I (B) II (C) III (D) IV

73. Which describes the isoelectric point of an amino acid? (A) The degree of ionization of the amino acid at pH 7. (B) The pH at which there is no net charge for the amino acid. (C) The degree of ionization of the amino acid at pH 7 in an electric field. (D) The pH at which the amino acid has a maximal charge

74. Which saturated fatty acids have the correct name?
(A) I, II (B) III, IV (C) I, III (D) II, IV

75. Which is not a characteristic group in phospholipids? (A) phosphate esters (B) fatty acid esters (C) glycerides (D) polyamides

76. Which is the number of stereocenters in methandrostenolone?

(A) 4 (B) 6 (C) 8 (D) 10

77. Which structure is vitamin A?

(A) I (B) II (C) III (D) IV

78. Which structures are named correctly?

(A) I, II (B) II, III (C) III, IV (D) I, III

79. What is the correct name for this structure?

(A) 5’-dAMP (B) 5’-TMP (C) 3’-AMP (D) 3’-dTMP

80. Which is the oxidizing agent for the following reaction?

(A) FAD (B) FADH₂ (C) NAD⁺ (D) NADH

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