111年 - 111 國立中興大學_學士後醫學系試題_學士後醫學系甲、乙組：化學#107632

1. Which of the following statements is FALSE? (A) Halogens are very reactive elements. (B) The alkali metals are fairly unreactive. (C) Sulfur is a main group element. (D) Noble gases do not usually form ions. (E) Zn is a transition metal.

2. Write the name for (SO₄)₂. Remember that Sn forms several ions. (A) tin (I) sulfite (B) tin (IV) sulfate (C) tin sulfide (D) tin (II) sulfite (E) tin (I) sulfate

3. What is the chemical formula for magnesium hydride? (A)MgH₂ (B) MgOH (C) MgH (D) MgOH₂(E) Mg(OH)₂

4. Which of the following compounds is soluble in water? (A) CaS (B) MgCO₃ (C) PbCl₂ (D) BaSO₄ (E) None of these compounds is soluble in water.

複選題
5. Which of the gases in the graph below has the largest molar mass?

(A) A (B) B (C) C (D) D (E) There is not enough information to determine.

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6. Which of the following statement is TRUE? (AB) State functions do not depend on the path taken to arrive at a particular state. (AC) DErxn can be determined using constant volume calorimetry. (AD) Energy is neither created nor destroyed, excluding nuclear reactions. (AE) Hrxn can be determined using constant pressure calorimetry. (BC) All of the above are true. (BD)一律送分

7. Which of the following statement is TRUE? (A) We can sometimes know the exact location and speed of an electron at the same time. (B) All orbitals in a given atom are roughly the same size. (C) Since electrons have mass, we must always consider them to have particle properties and never wavelike properties. (D) Atoms are roughly spherical because when all of the different shaped orbitals are overlapped, they take on a spherical shape. (E) All of the above are true.

8. Choose the valence orbital diagram that represents the Si. (A)(B) (C)(D) (E)

9. Predict the charge for the most stable ion of nitrogen(A) -3(B)-2 (C) 1 (D) 0 (E) +3

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10. Choose the compound below that should have the highest melting point according to the ionic bonding model. (A) Srl₂ (B) MgF₂ (C) CaCl₂ (D) SrF₂ (E) SrBr₂

11. Draw the Lewis structure for including any valid resonance structures. Which of the following statements is TRUE? (A) The nitrite ion contains one N-O single bond and one N=O double bond. (B) The nitrite ion contains two N-O bonds that are equivalent to 1.5 bonds. (C) The nitrite ion contains two N=Odouble bonds. (D) The nitrite ion contains two N-O single bonds. (E) None of the above are true.

12. Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule.
(A) (B) (C) (D) (E)

13. Draw the Lewis structure for . What is the hybridization on the Br atom? (A) sp³d² (B) sp³d (C) sp³ (D) sp² (E) sp

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

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15. Place the following substances in order of increasing vapor pressure at a given temperature. NF₃ NH₃ BCl₃ (A) NH₃＜NF₃＜BCl₃ (B) NF₃＜NH₃＜BCl₃ (C) BCl₃＜NF₃＜NH₃(D) NH₃＜BCl₃＜NF₃ (E) BCl₃＜NH₃＜NF₃

16. Which of the following compounds exhibits only dispersion and dipole-dipole intermolecular interactions? (A) H₂(B) HI (C) CO₂ (D) CH₃NH₂ (E) CH₃OH

17. Which of the following statements is TRUE? (A) The solubility of a solid is not dependent on either temperature or pressure. (B) The solubility of a solid is highly dependent on pressure. (C) The solubility of a solid is highly dependent on both pressure and temperature. (D) The solubility of a solid is highly dependent on temperature. (E) None of the above.

18. Consider the following reaction at equilibrium. What will happen if we add more SO₃ in the system? SO₂(g)+NO₂(g)⇌ SO₃(g)+NO(g) (A) The reaction will shift in the direction of products. (B) The reaction will shift to decrease the pressure. (C) No change will occur since SO3 is not included in the equilibrium expression. (D) The reaction will shift in the direction of reactants. (E) The equilibrium constant will decrease.

19. Which Br Φnsted-Lowry acid is not considered to be a strong acid in water? (A) HI (B) HBr (C) H₂SO₃ (D) HNO₃ (E)HCI

20. Which of the following is a Lewis acid? (A) BCl₃ (B) CH₄ (C) NH₃ (D) CHCl₃ (E) None of the above are Lewis acids.

21. When titrating a weak monoprotic acid with NaOH at 25℃, the (A) pH will be less than 7 at the equivalence point. (B) pH will be equal to 7 at the equivalence point. (C) pH will be greater than 7 at the equivalence point. (D) titration will require more moles of base than acid to reach the equivalence point. (E) titration will require more moles of acid than base to reach the equivalence point.

22. Which of the following statements is TRUE? (A) Entropy is not a state function. (B) Endothermic processes decrease the entropy of the surroundings, at constant T and P. (C) Endothermic processes are never spontaneous. (D) Exothermic processes are always spontaneous. (E) None of the above are true.

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23. What statement is NOT true about standard electrode potentials? (A) E° cell is positive for spontaneous reactions. (B) Electrons will flow from more negative electrode to more positive electrode. (C) The electrode potential of the standard hydrogen electrode is exactly zero. (D) E° cell is the difference in voltage between the anode and the cathode. (E) The electrode in any half-cell with a greater tendency to undergo reduction is positively charged relative to the standard hydrogen electrode and therefore has a positive E°.

24. What will happen during gamma ray emission. (A) The mass number and atomic number decrease. (B) The mass number and atomic number increase. (C) The mass number is unchanged and the atomic number decreases. (D) The mass number is unchanged and the atomic number increases. (E) The mass number and atomic number do not change.

25. Identify the element that is not used as a radioactive tracer. (A) iron-59 (B) phosphorus-32 (C) thallium-201 (D) iodine-131 (E) carbon-13

26. How many chiral centers are there in the following molecule?
(A) 4 (B) 5 (C) 6 (D) 7

27. Which of compounds can be reduced by sodium borohydride ? (A) 2-butanol (B) butyric acid (C) 2-butene (D) 3-pentanone

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28. Among the following compounds, how many are aromatic?

(A)4 (B)5 (C)6 (D)7

29. Predict the major product of the following reaction:
(A) (B) (C) (D)

30. Which reagent(s) are necessary to carry out the following reaction ?
(A) (B) (C) (D)

31. Which of the following reagents would convert 2-butanol into 2-bromobutane ? (A) Br₂/CCI₄ (B) Br₂/light; heat (C) PBr₃/pyridine (D) CuBr₂/MeOH

32. Choose the possible process to produce Isobutylbenzene.
(A) (B) (C) (D)

33. Which is major product of following reaction?
(A) (B) (C) (D)all of the above is incorrect.

34. Please order following compounds with aromaticity.(A) (B) (C) (D)

35. Which process of following reaction is incorrect ?
(A) (B) (C) (D)all of the above is correct.

36. There is a IR absorption at 1747 , what structure would you expect?(A) (B) (C) (D)

37. Which is major product of following reaction ?
(A) (B) (C) (D)(E)一律送分

38. Identify the reagents of the following transformation:
(A) 1) Excess NH₃ 2) LAH 3) H₂O (B) 1) Excess NH₃ 2) NaOH, heat 3) H₃O+ (C) 1) Excess NH₃ 2) SOCI₂ (D)1) NaCN 2) LAH 3) H₂O