112年 - 112 國立中興大學_學士後醫學系招生考試試題_學士後醫學系甲、乙組：化學#113979

科目：學士後西醫-化學 | 年份：112年 | 選擇題數：50 | 申論題數：0

試卷資訊

所屬科目：學士後西醫-化學

選擇題 (50)

1.Which of the following choices represent(s) a pair of resonance forms?
(A) both (a) and (b) (B) both (b) and (c) (C) both (a) and (c) (D) All of the above

2.Which sequence correctly ranks the following protons in order of increasing acidity?
(A)1＜2＜3(B)2＜3＜1 (C)3＜1＜2(D)3＜2＜1 (E)2＜1＜3

3.Which of the following statements about π molecular orbitals is/are correct?(A) π molecular orbitals are cylindrically symmetric. (B)Most of the electron density in a π molecular orbital is centered above and below the internuclear axis. (C) When two atoms are connected by a double bond, both of these bonds are π bonds. (D) Both statements B and C are correct. (E) Statements A, B, and C are all correct.

4.Which of the following compounds is not a constitutional isomer of a compound with an empirical formula C3H7O and a formula mass of 118.164?
(A)(B)(C)(D)(E)

5. Identify the correct IUPAC name for the following structure.
(A) 3-s-Butyl-1-iodo-2-methylhexane (B) 1-lodo-2,4-dimethyl-3-propylhexane (C) 4-(2-1odo-1-methylethyl)-3-methyIheptane (D) 2,4-Dimethyl-1-iodo-3-propylhexane.

6.The structures below are _______.
(A) not isomers (B) conformation isomers (C) structural isomers (D) cis-trans isomers (E) both B and D.
7. When pyridine is treated with a mixture of nitric and sulfuric acids, the major product is _____. (A) 2-nitropyridine (B) 3-nitropyridine (C) 4-nitropyridine (D) both A and C
8. Which sequence of steps below describes the best synthesis of 5-oxohexanoic acid starting with 1-methylcyclopentan-1-ol?(A) 1. Conc. KMnO4；2. Dry gaseous HBr； 3. Mg/ether； 4. CO2 (B) 1. Conc. KMnO4；2. CH3MgBr/ether； 3. H3O+ (C) 1. H2SO4 and heat； 2. O3； 3. (CH3)2S (D) 1. H2SO4 and heat； 2. Conc. KMnO4； 3. LiAlH4； 4. H3O+ (E) 1. H2SO4 and heat； 2. Conc. KMnO4；
9. What compound is produced when cyclohexene is treated with concentrated KMnO4?(A) adipic acid (B) benzoic acid (C) succinic acid (D) cyclohexacarboxylic acid (E) caproic acid

10. Which of the following represents the highest occupied molecular orbital for the conjugated pi system in the structure below?
(A)(B)(C)(D)
11.What is the major organic product which results when cyclohexene is irradiated in the presence of N- bromosuccinimide? (A)1-bromocyclohexene (B)2-bromocyclohexene (C)1,2-dibromocyclohexane (D)3-bromocyclohexene (E)4-bromocyclohexene
12. Which of the following would not have a C-H stretch at about 3050 cm-1? (A) 1-pentene (B) 2-pentene (C) 2,3-dimethyl-2-pentene (D) 2-methyl-2-pentene (E) 2,4-dimethyl-2-pentene
13. What compound has a significant m/z 70 in its mass spectrum? (A) 2-butanol (B) diethyl ether (C) ( E )-2-pentene (D) 1-pentanol (E) octane

14. The stereochemical configuration of D-Threonine is (2R, 3S). Which of the following structures corresponds to the correct configuration? (A)(B)(C)(D)
15. Which series of reactions described below, if any, will result in the formation of 2-methylpentan-3- one starting with 1-propanol? (A) 1. (CH3)2CHMgBr； 2. dilute H3O+； 3.PCC. (B) 1. PCC； 2. (CH3)2CHLi； 3. dilute H3O+； 4. Na2Cr2O7/H2SO4. (C) 1. Na2Cr2O7/H2SO4；2.2(CH3)2CHMgBr, 3. dilute H3O+；4.LiAIH4. (D) 1. Na2Cr2O7/H2SO4； 2. SOCI2； 3.2(CH3)2CHMgBr；4.H3O+. (E) none of the above

16. Provide the structure of the major product in the reaction below.
(A)(B)(C)(D)both A and B

17. Provide the final product of the sequence of steps below?
(A)(B)(C)(D)

18. Which of the structures shown below is consistent with the C-13 NMR (off resonance splitting for each peak is shown as a table within the figure) and H-NMR spectra? (formula = C9H11OBr)
  (A)(B)(C)(D)(E)

19. Provide the final product of the sequence of steps below?
  (A)(B)(C)(D)(E)

20. Predict the product of the following reaction, including stereochemistry.
(A)(B)(C)(D)

21. Provide the final product of the sequence of steps below? (A)(B)(C)(D)

22. Provide the final product of the sequence of steps below?
(A)(B)(C)(D)

23. Predict the major product of the following reaction?
(A)(B)(C)(D)

24. Predict the products of the following reaction.
(A) both (a) and (b) (B) both (b) and (c) (C) both (c) and (d) (D) both (b) and (d)

25. Predict the major product of the following reaction?
(A)(B)(C)(D)

26. What is the point group of BICIF (chlorofluoroiodoborane)? (A)(B) (C) (D)(E)
27. Consider the calculation: 
 52.00 +1.001- 13.1 + 1.3129= 
Which of the following is the correct answer for the number of significant figures for this question? (A)41(B) 41.2 (C) 41.21 (D)41.214 (E)41.2139
28. Which of the following statements about thermodynamics is/are correct?
I. The first law of thermodynamics is the Law of Conservation of Energy
II.A perfect crystalline structure, will have no entropy (S) at 0°C.
III.The Second Law of Thermodynamics states that all spontaneous changes keep the conservation in the entropy of the universe.
IV.The first law of thermodynamics defines the internal energy ( E ) as equal to the difference between
the heat transfer (Q) into a system and the work (W) done by the system.(A)I,II(B)I,III(C)I,II,III(D)I,IV(E)I, II, III, IV

29. Consider the structure of bicarbonate ion . Which of the following statements is false? (A) All the charges of three O ions are equivalent. (B) One C-O bond is shorter than the other two at room temperature. (C) The carbon atom possess three sp2 hybridized orbitals. (D) The geometric shape is trigonal planar. (E) More than one Lewis structure is allowed.
30.The naming of chemical compounds, including ions and molecules is important in chemistry and other scientific fields. Indicate which one of the compound names is incorrect. (A) K2O is potassium oxide (B) Mn(OH)2 is magnesium(II) hydroxide (C) CO is carbon monoxide (D) sulfur hexafluoride is SF6 (E) NH3 is ammonia

31. Calcium is a metal, and sulfur is a nonmetal. They are in a different family of the periodic table. When they become ions, which characteristic of the following would be the correct relation between ions? (A) isomeric(B) isotopic(C)isoelectronic (D)isochromatic (E)isobaric

32.The van't Hoff factor (i) express the effective concentration of particles for a solute. In comparison with NaCl aqueous solution, what properties of the solution of MgSO4 may be lower than those of as these two solutions are identical in concentration? (A) boiling point, osmotic pressure (B) freezing point, osmotic pressure (C) osmotic pressure (D) vapor pressure, osmotic pressure (E) boiling point, freezing point

33.The orbital wavefunction for the state (n =3, l = 1, and = O) of the hydrogen atom, is expressed as

  Where σ = r/a0 and a0 is the Bohr radius. How many nodal surfaces will appear in the wave function? (A)0(B)1 (C)2 (D)3 (E) 4

34. Redox reaction includes oxidation and reduction simultaneously. Balance the following redox reaction in the basic solution

Indicate how many water molecules will exist in the balanced ionic equation (A) 14 (B) 7 (C) 12 (D) 6 (E) none
35.How many types of oxidation numbers are for the hydrogen atom in the following compounds? H2O2,CH4,H2O, NaBH4,H2,HNO3, CaH2, and NH3 (A)1 (B) 2 (C) 3 (D) 4 (E) 5
36. Which statement of the following about hydrogen bonding is not true? (A)Hydrogen bonds can be intermolecular (occurring between separate molecules) or intramolecular (occurring among parts of the same molecule) (B)Hydrogen atom in molecules is attached by a highly electronegative atom (N, O, F) (C)An unpaired electron at least resides on the highly electronegative atom (N, O, F) (D)Due to the higher boiling point of H2O than HF, a H-bond between two H2O molecules is stranger than a H-bond between two H-F molecules. (E)The interactive way of the hydrogen bond is the same as that of dipole-dipole intramolecular interaction
37.According to the solubility rules, how many of the following spices should be soluble in water? 
Hg2Cl2, Ag2S, Ag2CO3, PbSO4, Na2S (A) 0 (B) 1 (C) 2 (D) 3 (E) 4
38.Construct a table of Crystal Field Stabilization Energy (CFSE) for all d" electronic configuration in tetrahedral complexes under a strong field, Which d" configuration could be diamagnetic? (A) d1 (B)d2 (C)d4 (D) d6 (E) d8
39. Reactions of a series of substituted pyridines with BFs shows the order of Lewis basicity: Pyridine ＞2-methylpyridine ＞ 2,6-dimethylpyridine＞2-t-butylpyridine. Which of the folowing effects induces this order? (A) 1-strain (B) B-strain (C) F-strain (D) inductive effect (E) leveling effect

40.Consider the following reactions, which one of the following will have the smallest equilibrium constant at 298 K? (A) CaO(s) + CO2(g)→CaCO3(s) △G°=-131.1kJ (B) 2Hg(g) + O2(g)→ 2HgO(s) △G°=-180.8 kJ (C) 3O2(g)→2O3(g) △G°= +326 kJ (D) 2H2O(aq)→2H2(s) + O2(g) △G°=+ 475.4 kJ (E) More information is needed to determine.
41.Regarding the "Quantum Mechanics and Atomic Structure", which one of the following statements is incorrect? (A)The discovery of"Blackbody Radiation" payes a foundation for scientists to find the quantization of atomic energy. (B)The "Aufbau principle" states that the proper way of placement of electrons in atomic orbitals is from the lowest energy level up and shall also obey Hund's rule. (C)The"Zero Point Energy" states that the energy level is lowest in this state of the atomic orbitals. However, it is not equal to zero. (D)The "Heisenberg Indeterminacy Principle: states that one can't make a completely accurate measurement of both the position (x) and its moment (mv) of a particle. (E) "Hund's rule" implies that while electrons place into degenerated orbitals, they will pair each other first.

42. Which one of the following statements is incorrect for "Kinetics"? (A) The orders for the reactions in Kinetics have nothing to do with the coefficient of the reaction. (B) It is possible that a non-integer reaction order can be found in a reaction. (C) The derivation of the first-order reaction leads to C= (Co: intial concentration；C: concentration at moment t； t: reaction time) (D) A rather useful concept of "half-life " can be derived from the concept of the zero-order reaction. (E) The relative stabilities of the reactant and product have nothing to do with the reaction rate.

43. Pick the correct molecular structure(s) as predicted by the VSEPR theory?
(A)I(B)I,I(C)I,II,III(D)I,II,III,IV(E)I,II,III,IV,V

44. Pick the correct one from the following statements about the electrochemical cell described below?
(A) The cell reaction is spontaneous with a standard cell potential of 3.18 V. (B) The cell reaction is spontaneous with a standard cell potential of -2.90 V. (C) The cell reaction is nonspontaneous with a standard cell potential of -2.90 V. (D) The cell reaction is nonspontaneous with a standard cell potential of -3.18 V. (E) The cell is at equilibrium.

45. When pure water (pH = 7 at 25℃) is heated, it will induce: (A) [H+]＞[OH-] (B) The water is not neutral. (C) pH is still 7 (D) [H+]＜[OH-] (E) None of these.

46. Which of the following statements about the 1H NMR (Nuclear Magnetic Resonance) experiment is incorrect? (A)The energy difference between the two spin states ( = +1/2 and =-1/2) depends on the strength of the magnetic field. (B)When energy absorption takes place, the electrons are excited by the electromagnetic radiation to obtain the NMR signal. (C) When aligned with the magnetic field, the energy of a proton with spin of mi = +1/2 is lower than that with mi = -1/2 when aligned against it. (D) The relative population of the upper spin state, Nupper, and of the lower spin state, Nlower, is given by the Boltzmann equation (Nupper / Nlower = e-△E/kT). (E) The energy needed to flip the spin of a proton is within the radio frequency range of the electromagnetic spectrum.
複選題
47. Which of the following compounds does not exhibit an optical isomer? (en: NH2CH2CH2NH2) (A) cis-[Co(en)2(Cl)2]+ (B) [Co(en)3]3+ (C) cis-[OsCl2(CO)4] (D)isobutanol(E) trans-[Co(en)2Cl2]+
48. Which of the following statements is incorrect regarding molecules of an ideal gas? (A) Molecules of an ideal gas undergo many collisions with each other and the container walis. (B) The molecules of an ideal gas are relatively far apart. (C) Molecules of greater mass have a lower average speed than that of less mass at the same temperature. (D) The average speed of molecules from samples of different "ideal" gases is the same at the same temperature. (E) All molecules of an ideal gas have the same average kinetic energy at a constant temperature.

49.The proposed mechanism for the reaction of H2O2 +2H++2I-→I2 +2H2O is as follows.:

Based on the proposed mechanism, determine the order of H+ in this reaction by identifying the rate law
that is consistent with it.(A) 4 (B) 3 (C) 2 (D)1 (E)0
50.Determine the pH of a buffered solution containing 0.15 M NH3 (Kb = 1.8 x 10-5) and 0.35 M NH4Cl. (A) 4.7 (B) 5.1 (C) 6.3 (D) 7.2 (E) 9.1

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