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107年 - 高雄醫學大學 107 學年度學士後醫學系招生考試試題(共同科目)--化學#75186

科目：學士後西醫-化學 | 年份：107年 | 選擇題數：45 | 申論題數：0

試卷資訊

所屬科目：學士後西醫-化學

選擇題 (45)

16. Carbon monoxide is commonly used to reduce ores to produce free metals and carbon monoxide is converted to ______. (A) carbon dioxide (B) carbon black (C) methane (D) graphite (E) carbon nanotube
17. Which of the following is the correct order of boiling points for KNO3, CH3OH, C2H6, and Ne? (A) KNO3 ＜ CH3OH ＜ C2H6 ＜ Ne (B) CH3OH ＜ Ne ＜ C2H6 ＜ KNO3 (C) Ne ＜ C2H6 ＜ KNO3 ＜ CH3OH (D) Ne ＜ C2H6 ＜ CH3OH ＜ KNO3 (E) C2H6 ＜ Ne ＜ CH3OH ＜ KNO3

18. How many chiral centers are in this molecule?5c98731f36833.jpg (A) 0 (B) 1 (C) 2 (D) 3 (E) 4

19. Which of the following statements is incorrect? (A) A triple bond is composed of two π bonds and one σ bond. (B) π bonds result from the head-to-head overlap of atomic orbitals. (C) Free rotation does not occur about a double bond. (D) π bonds have electron density on the inter-nuclear axis. (E) More than one of these statements are incorrect.

20. Which of the following statements is incorrect? (A) The reaction constant might change when the reaction temperature changes. (B) The reaction constant won’t change when the concentration of reactants changes. (C) The reaction constant might change when the catalyst is added to the reaction. (D) The activation of energy for a reaction might change when the catalyst is added. (E) The activation of energy for a reaction might change when the reaction temperature changes.
21. When 6 M sodium hydroxide is added to an unknown white solid, the solid is dissolved. What is a possible identity for this solid? (A) Mg(OH)2 (B) Al2(SO4)3 (C) BaCO3 (D) AgBr (E) Ca3(PO4)2 

22. A chemist wishes to separate benzoic acid from 4-hydroxybenzaldehyde. Which is the best method to achieve this separation?5c98735c04b0e.jpg (A) Partitioning the mixture between diethyl ether and water. (B) Partitioning the mixture between diethyl ether and 1 M aqueous NaHCO3. (C) Partitioning the mixture between diethyl ether and 1 M aqueous NaOH. (D) Partitioning the mixture between diethyl ether and 1 M aqueous HCl. (E) Recrystallizing the mixture in diethyl ether.

23. The reaction system5c98737b92013.jpg has already reached equilibrium. Which of the following statements is correct? (A) Additional H2O(g) added to the system will shift to the left to obtain the equilibrium. (B) As an exothermic reaction, the system will shift to the right to attain the equilibrium when temperature increases. (C) When carbon dioxide is removed, the system will shift to the left to achieve the equilibrium. (D) When volume of the reaction container is decreased, the system will shift to the right to reach the equilibrium. (E) Addition of helium gas into the reaction system will have no effects on its equilibrium.

24. Which elements are most similar in atomic size? (A) Li (Z = 3) and Na (Z = 11) (B) B (Z = 5) and Al (Z = 13) (C) Co (Z = 27) and Rh (Z = 45) (D) Zr (Z = 40) and Hf (Z = 72) (E) Be (Z = 4) and F (Z = 9)
25. In the Lewis structure of I3 – , there are _________ electrons around the central iodine atom. (A) 4 (B) 6 (C) 8 (D) 10 (E) 12
26. Which of the following statements is incorrect for colloids? (A) Colloids are suspension of very large particles ( ＞2000 nm) in a medium. (B) Tyndall effect is observed for colloids. (C) Electric repulsion seems to be the main factor that stabilizes colloids. (D) Removal of soot from smoke is an example of coagulation of colloids. (E) None of the above.
27. Which organic base is NOT found in RNA? (A) Uracil (B) Cytosine (C) Thymine (D) Adenine (E) Guanine

28. The figure below is a cross section of the electron probability distribution for an orbital. What are n and l values for this orbital? 5c9873b633cbd.jpg(A) n = 3, 5c9873c9adf72.jpg= 1 (B) n = 2,5c9873d5541ab.jpg= 0 (C) n = 2,5c9873e07218d.jpg = 1 (D) n = 3, l = 2 (E) n = 2, 5c9873ebd748b.jpg = 2

29. A sample of a white solid is known to be NaHCO3, AgNO3, Na2S, or CaBr2. Which 0.1 M aqueous solution can be used to confirm the identity of the solid? (A) NH3(aq) (B) HCl(aq) (C) NaOH(aq) (D) KCl(aq) (E) CH3COOH(aq)
30. The Haber process _____________________ (A) is used to produce nitric acid. (B) is used to produce sulfuric acid. (C) is used to produce ammonia. (D) is used to produce urea. (E) None of the above.

61. Which of the following solution has shown the correct titration curve?5c9874305887e.jpg (A) NH3 (B) CO32- (C) HCN (D) PO4 3- (E) NaOH

62. Cisplatin cis-[PtCl2(NH3)2] has been applied as an anti-tumor drug. What is its main interaction in vivo? (A) Binding with DNA. (B) Binding with lipid. (C) Binding with protein. (D) Binding with sugar. (E) Blocking ion absorption.
63. A chemist needs to prepare a buffered solution using one of the following acids (and its sodium salt): HA (Ka = 1.4 × 10-3 ), HB (Ka = 9.8 × 10-6 ), HC (Ka = 8.4 × 10-5 ), HD (Ka = 3.5 × 10-7 ), HE (Ka = 1.9 × 10-8 ). To prepare a solution buffered at pH = 5.10, which system will work best (a buffer with the best capacity)? (A) HA and its sodium salt (B) HB and its sodium salt (C) HC and its sodium salt (D) HD and its sodium salt (E) HE and its sodium salt
複選題

64. Of the following eleven compounds, how many of them have aromatic character?5c9874782f598.jpg (A) 3 (B) 4 (C) 5 (D) 6 (E) 7

65. Which of the following species has the lowest dissociation energy? (A) O2 (B) O2 – (C) O2 2– (D) O2+ (E) O2 2+

66. According to the Bohr Model, please use the equation below and calculate the minimum energy required to remove the electron from a He+ ion in its first excited state.5c9874dc7620f.jpg (A) 2.178 x 10-18 J (B) 5.445 x 10-19 J (C) 8.712 x 10-18 J (D) 4.356 x 10-18 J (E) 1.089 x 10-18 J

67. About the atomic orbitals, which of the following statements is incorrect? (A) In a polyelectronic atom, the orbital relative energies are E3s ＜ E3p ＜ E3d. (B) In H atom, energy is absorbed and electron jumps from 1s to 3s orbital. (C) The 2p orbital is spherically symmetric. (D) The square of the wave function is indicated as a probability distribution. (E) None of the above.
複選題
68. NF3 has a bond angle of 102.5º, while PF3 has a bond angle of 96.3º. What is the best explanation for the larger bond angle in NF3? (A) The nitrogen 2s orbital participates more in bonding than the phosphorus 3s orbital does. (B) Nitrogen is more electronegative than phosphorus. (C) NF3 has no unpaired electrons while PF3 has two unpaired electrons. (D) NF3 is an ionic compound while PF3 forms covalent bonds. (E) NF3 adopts a trigonal geometry, while PF3 displays a trigonal planar configuration.
69. When the reaction below is at equilibrium, what is the temperature? 2 NO(g) + O2(g) → 2 NO2(g) H   rxn = –113 kJ•mol–1 S°rxn = –145 J•mol–1 •K–1 (A) –195 °C (B) 77.9 °C (C) 350.9 °C (D) 506 °C (E) 779 °C

70. Please balance the following equation (o, p, q, x, y, z are reaction coefficients). What is the sum of all coefficients (o + p + q + x + y + z) ?5c98756ae3fc5.jpg (A) 18 (B) 20 (C) 22 (D) 24 (E) 26

71. For the reaction A + B  products, the following data were obtained:5c98758f026f5.jpg What is the experimental rate law? (A) Rate = k[A] (B) Rate = k[B] (C) Rate = k[A][B] (D) Rate = k[A]2 [B] (E) Rate = k[A][B]2 

72. In the blood of an adult human, there are approximately 2.64 ✖ 1013 red blood cells with a total of 2.90 g of iron. On the average, how many iron atoms in each red blood cell? (Fe = 55.85 g/mol) (A) 5.19 ✖  10–2 (B) 4.72 ✖ 1011 (C) 1.09 ✖  10–13 (D) 9.10 ✖  1012 (E) 1.18 ✖  109

73. What is the rate constant for radioactive decay of 14CO2(g) at 0.1 atm? (The half-life of C-14 nucleus is 5730 years.) (A) 1.38 × 10‒8 h ‒1 (B) 2.76 × 10‒8 h ‒1 (C) 1.38 × 10‒9 h ‒1 (D) 3.45 × 10‒9 h ‒1 (E) 6.90 × 10‒9 h ‒1
74. 1 mg of a non-electrolyte protein is dissolved in enough water to make 1.00 mL of solution. The osmotic pressure of the solution is found to be 1.56 torr at 25ºC. The molecular weight of this protein is approximately ________ g. (A) 1.19 × 107 (B) 11905 (C) 5950 (D) 999 (E) None of the above

75. When the permanganate ion, MnO4ˉ, acts as an oxidizing agent which forms different products depending on the pH of the solution. Which species corresponding to the conditions listed below is correct? 5c98764d247fb.jpg(A) A (B) B (C) C (D) D (E) E

76. Alanine, H2NCH(CH3)CO2H, has Ka = 4.5 × 10–3 and Kb = 7.4 × 10–5 . Which species has the highest concentration in water (pH=7.0)? (A) H2NCH(CH3)CO2H (B) +H3NCH(CH3)CO2H (C) H2NCH(CH3)CO2 – (D) H2NCH(CH3)CO2H2 + (E) +H3NCH(CH3)CO2 –
77. The rate of effusion of an unknown gas is measured and found to be 24 mL/min. Under the same condition, the rate of effusion of CO gas is 38 mL/min. Which is the best formula of this unknown gas? (A) CO2 (B) H2O (C) C5H10 (D) C6H6 (E) C2H5OH

78. An unknown concentration of NH3 solution is titrated by HCl solution. The color change for indicators at different pH values are shown in the table below. Which of the following indicators is the best for this titration?5c9876f466cca.jpg (A) phenolphthalein (B) alizarine yellow R (C) methyl red (D) crystal violet (E) thymol blue

79. HNO2(l) + NaCl(s) → HCl(g) + NaNO2(s) Calculate the ΔH° value for the reaction above based on the information below. 5c987722a77f0.jpg(A) –78.5 kJ (B) –157 kJ (C) 0 kJ (D) 78.5 kJ (E) 157 kJ

80. The crystal field diagram for a linear transition metal complex ML2 where the ligands lie along the z axis is shown below. Which of the following statements is correct?5c987753d12f9.jpg (A) A orbital is dx 2 -y 2 (B) B orbital and C orbital are dxz and dyz (C) A orbital is dxy (D) B orbital and C orbital are dx 2 -y 2 and dz 2 (E) A orbital is dz 2

81. Consider the following complexes: (en=H2N–CH2–CH2–NH2 and is bidentate) .5c987828a73f4.jpgWhich can exhibit cis-trans isomerism? (A) I (B) I and II (C) I, II, and III (D) I, II, III, and IV (E) I, II, and IV 

82. Four solutions have violet, blue, yellow and green color, respectively. Each solution contains the following compounds: I. [Cr(H2O)4Cl2]Cl, II. [Cr(H2O)5Cl]Cl2, III. [Cr(H2O)6]Cl3, IV. [Cr(ethylenediamine)3]Cl3. Please use the following table to predict the color for each solution. 5c98789aacb75.jpg (A) I: green; II: blue; III: violet; IV: yellow (B) I: yellow; II: violet; III: blue; IV: green (C) I: green; II: yellow; III: violet; IV: blue (D) I: green; II: violet; III: blue; IV: yellow (E) I: violet; II: blue; III: green; IV: yellow

83. Which of the following statements is the best to describe the results of attempted separation by fractional distillation of the two isomers of 1,2-dichloroethene?5c9878bf44c28.jpg (A) They can be separated by fractional distillation, with isomer 1 boiling at the lower temperature. (B) They can be separated by fractional distillation, with isomer 2 boiling at the lower temperature. (C) They cannot be separated by fractional distillation because both isomers have the same boiling point. (D) They cannot be separated by fractional distillation because they interconvert rapidly at the distillation temperature. (E) They cannot be separated by fractional distillation because they have the same molecular weight and reactivity.

84. Which isomers of C4H8 has the lowest absolute entropy at 25°C? (A) 1-butene (B) cis-2-butene (C) trans-2-butene (D) 2-methylpropene (E) cyclobutane
85. What are the factors influencing the infrared frequency of the CX vibration for CH3X? I. mass of X II. strength of the CX bond III. type of CX vibration (stretch or bend) (A) I (B) II (C) I and II (D) II and III (E) I, II, and III
86. The radioactive isotope 247Bk (Z = 97) decays by a series of α-particle and β-particle productions, taking 247Bk through many transformations to end up as 207Pb (Z = 82). In the complete decay series, how many α particles and β particles are produced, respectively? (A) 10, 8 (B) 10, 5 (C) 10, 2 (D) 8, 8 (E) 5, 8

87. Consider the galvanic cell shown below (the contents of each half-cell are written beneath each compartment). The standard reduction potentials are as follows: 5c98790fc1c64.jpg Which of the following statements about this cell is incorrect? (A) The value of E° for this cell is 1.82 V (B) Electrons flow from the Cr electrode to the Pt electrode. (C) Reduction occurs at the Cr electrode. (D) The cell is not at standard conditions. (E) The value of E for this cell at 25°C should larger than 1.82 V.5c98793057df0.jpg

88. A galvanic cell consists of two half-reactions:5c9879546e937.jpgWhat is the maximum work can be obtained from this cell at standard condition? (Faraday constant = 96500 C mol‒1 ) (A) 173.7 kJ (B) 347.4 kJ (C) 569.4 kJ (D) 113.9 kJ (E) None of the above.

89. Alkali metals (Group 1) are different with alkaline earth metals (Group 2). Which of the following statements is correct? (A) Alkali metals have larger ionic radii. (B) Alkali metals have higher melting points. (C) Alkali metals have greater first ionization energies. (D) Alkali metals have greater densities. (E) Alkali metals have greater electronegativity.
90. The partial pressure of CO2(g) is 0.22 atm and that of CO(g) is 0.44 atm in a mixture of the two gases at 25ºC. What is the mass fraction of CO2 in the mixture? (atomic weight: C = 12 g/mol, O = 16 g/mol) (A) 44% (B) 56% (C) 33.3% (D) 66.7% (E) 50%

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