105學年度醫藥暨應用化學系碩士班考古題庫

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高雄醫學大學 105 學年度 研究所碩士班 招生考試

系所：醫藥暨應用化學系

科目： 普通化學

[A]- interaction, [B] van der Waals Interaction [C] Electrostatic interaction [D]Hydrogen Bond [E]C-F bond 2. For H2, which of the following statements is NOT true?

[A] Its HOMO is the 1s orbital. [B] Its LUMO is the 1s* orbital. [C] Its lowest-energy excited state electron

configuration is (1s)1(1s*)1 [D] The bond order for Its lowest-energy excited state is 1 [E] Its ground state electron configuration is (1s)2

3. Name the following structures: CH3–(CH2)6 –CH3 ?

[A]pentane. [B]Hexane. [C]Heptane. [D]Octane. [E]Nonane

4. For which of the following compound(s) are cis and trans isomers possible?

[A] 2,3-dimethyl-2-butene. [B] 3-methyl-2-pentene. [C] 4,4-dimethylcyclohexanol. [D] ortho-chlorotoluene. [E] All can exhibit cis/trans isomers

5. How many isomers are there of "dichloroethene"?

[A]2. [B]3. [C]4. [D]5. [E]6

6. Which of the following is a d7 _ion?

[A] Co(II). [B] Cu(II). [C] Mn(II). [D] Mn(IV). [E]Cu(I)

7. The spectro-chemical series is I– _{< Br}– _{< Cl}– _{< F}– _{< OH}– _{< H}

2O < NH3 < en < NO2– < CN– Which of the following complexes will absorb visible radiation of the highest energy (shortest wavelength)?

[A] [Co(H2O)6]3+. [B] [Co(I)6]3–. [C] [Co(OH)6]3–. [D] [Co(en)3]3+. [E] [Co(NH3)6]3+

8. Which of the following complexes would be diamagnetic (all electrons paired)? Assume the strong-field case for all complexes.

[A] [Ni(CN)6]4–. [B] [Ti(CN)6]3–. [C] [Co(CN)6]3–. [D] [Cr(CN)6]3–. [E] none of these

9. In which of the following compounds does N have its maximum oxidation state?

[A] NH3. [B] N2O. [C] N2. [D] NaNO3. [E] HN3

10. Cs-131 nuclide has a half-life of 30 years. After 144years, about 3.0 grams remain. The original mass of the Cs-131 sample is closest to?

[A] 167 g. [B] 42 g. [C] 90g. [D] 292 g. [E]100 g

11. Which of the following is true for the cell shown here? Zn(s) | Zn2+(aq)  Cr3+_{(aq) | Cr(s)}

[A] The electrons flow from the cathode to the anode. [B] The electrons flow from the zinc to the chromium. [C] The electrons flow from the chromium to the zinc. [D] The chromium is oxidized. [E] The zinc is reduced.

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12. Consider an electrochemical cell with a zinc electrode immersed in 1.0 M Zn2+ _{and a silver electrode immersed in 1.0} M Ag+_{. Zn}2+ + 2e-  Zn





Calculate the



[A] 0.045 V. [B] -0.045 V. [C] 1.555 V. [D] -1.555 V. [E] none of these

13. Which of the following would be the BEST oxidizing agent?

[A] Cl2. [B]Fe. [C] Na. [D] Na+. [E] F-

14. For which of the following processes would S be expected to be most positive?

[A] O2(g) + 2H2(g)  2H2O(g). [B] H2O(l)  H2O(s). [C] NH3(g) + HCl(g)  NH4Cl(g). [D] 2NH4NO3(s)  2N2(g) + O2(g) + 4H2O(g). [E] N2O4(g)  2NO2(g)

15. Order the intermolecular forces (dipole-dipole (I), London dispersion (II), ionic (III), and hydrogen-bonding(IV)) from weakest to strongest.

[A]I<II<III<IV. [B]II<I<IV<III. [C]IV<I<II<III. [D]I<II<IV<III. [E]II<III<I<IV

16. A crystal was analyzed with x-rays having 1.57 Å wavelength. A reflection was produced at  = 21.9. Assuming n = 1, what is the distance between the layers of atoms in the crystal?

[A] 8.42 Å. [B] 4.21 Å. [C] 0.475 Å. [D] 0.846 Å. [E] 2.10 Å

17. Which one of the following statements about solid Cu (face-centered cubic unit cell) is incorrect?

[A] It will conduct electricity. [B] There are two atoms per unit cell. [C] The number of atoms surrounding each Cu atom is 12. [D] The solid has a cubic closest-packed structure. [E] The length of a face diagonal is four times the Cu radius.

18. The hybridization of the central atom in I3- is?

[A] sp. [B] sp2_{. [C] sp}3_{. [D] dsp}3_{. [E] d}2_sp3 19. A  (pi) bond is the result of the?

[A] overlap of two s orbitals. [B] overlap of an s orbital and a p orbital. [C] overlap of two p orbitals along their axes. [D] sidewise overlap of two parallel p orbitals. [E] sidewise overlap of two s orbitals

20. Consider the following reaction? A2 + B2 2AB H = 365 kJ, The bond energy for A2 is half the amount of AB. The bond energy of B2 = 447 kJ/mol. What is the bond energy of A2 (kJ/mol)?

[A] 812. [B]630. [C]271. [D]183. [E]120

Consider the following molecules to answer question 21, 22 and 23

I. BF3 II. CHBr3 III.Br2 IV.XeCl2 V.CO VI.SF4

21. Which of these molecules violate the octet rule?

[A] I, II, IV. [B] I, III, IV, VI. [C] III, V, VI. [D] I, IV, VI. [E] I, II, IV, VI

22. Which of these molecules have a zero net dipole moment.

[A] III, V. [B] I, III, IV. [C] III, IV, V. [D] I, III, IV, VI. [E] none of them

23. Which of these molecules have a trigonal bipyramidal electron pair arrangement?

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24. How many of the following molecules or ions are linear?

NH3, OF2, HCN, CO2, NO2

[A]0. [B]1. [C]2. [D]3. [E]4

25. The energy of the light emitted when a hydrogen electron goes from n = 2 to n = 1 is what fraction of its ground-state ionization energy?

[A]3/4. [B]1/2. [C]1/8. [D]1/16. [E]1

26. How many f orbitals have when n=6?

[A]2. [B]7. [C]10. [D]5. [E]18

27. Which of the following atoms would have the largest second ionization energy?

[A]Mg. [B]Cl. [C]S. [D]Ca. [E]Na

28. A sample of He gas (3.0 L) at 5.6 atm and 25 °C was combined with 4.5 L of Ne gas at 3.6 atm and 25 °C at constant temperature in a 9.0 L flask. The total pressure in the flask was ________ atm. Assume the initial pressure in the flask was 0.00 atm and the temperature upon mixing was 25 °C?

[A] 2.6 [B] 9.2. [C] 1.0. [D] 3.7. [E] 24

29. For which of the following transitions does the light emitted have the longest wavelength? [A] n = 4 to n = 3. [B] n = 4 to n = 2. [C] n = 4 to n = 1. [D] n = 3 to n = 2. [E] n = 2 to n = 1

30. Bromine exists naturally as a mixture of bromine-79 and bromine-81 isotopes. An atom of bromine-79 contains? [A] 35 protons, 44 neutrons, 35 electrons. [B] 34 protons and 35 electrons, only. [C] 44 protons, 44 electrons, and 35 neutrons. [D] 35 protons, 79 neutrons, and 35 electrons. [E] 79 protons, 79 electrons, and 35 neutrons

31. How many grams of oxygen are in 0.52g of NaHCO3?

[A] 0.099 g. [B] 0.019 g. [C] 6.19  103 _{g. [D] 0.033 g. [E] 0.30 g}

32. In a given period this group has the element with the largest atomic radius?

[A] Group 1A. [B] Group 2A. [C] Group 3A. [D] Group 4A. [E] Group 5A

33. An unknown salt, M3Z, has a Ksp of 1.2 1017. Calculate the solubility in mol/L of M3Z?

[A] 2.6 105M. [B] 3.5 109 M. [C] 1.4 106 M. [D] 2.2 106 M. [E] none of the above

34. Which of the following solid salts should be more soluble in 1.0 M NH3 than in water?

[A] Na2CO3. [B] KCl. [C] AgBr. [D] KNO3. [E] none of these

35. The properties of graphene include?

[A] high strength. [B] low thermal conductivity. [C] a zero energy gap. [D] A and C. [E] A, B and C

36. Which one of the following vitamins is water soluble?

[A] vitamins A. [B] vitamins B. [C] vitamins K. [D] vitamins D. [E] vitamins E

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37. Which of the following is NOT classified as a nanomaterial?

[A] isoprene. [B] C60. [C] carbon nanotubes. [D] graphene. [E] All of the above are nanomaterials

38. Which one of the following graphs shows the correct relationship between concentration and time for a reaction that is second order in [A] ?

[A] . [B] [C] .

[D] [E]

39. How many chiral centers are there in CH3CHClCH2CH2CHBrCH3?

[A]0. [B]1. [C]2. [D]3. [E]4

40. How many Department named “Medicinal and Applied Chemistry in Taiwan? [A]0. [B]1. [C]2. [D]3. [E]4