| 99 | 1 Which of the following atomic orbital designations arc not possible? (A) (B) 3p (C) 4d (D) 5p (E) 6s |
| 99 | 2 How many valence electrons does a carbon atom have? (A)1 (B)2 (C) 3(D)4 (E) 6 |
| 99 | 3 Which of the following species has the highest entropy (S°) at 25°C? (A)CO(g)(B)CH4(g) (C) NaCI(s) (D) H2O(I) (E) Fe(s) |
| 99 | 4 The energy released by the sun is the result of: (A)naturaf radioactivity (B) nuclear fission (C) nuclear fusion (D) combustion of hydrogen (E) photosynthesis |
| B | 5 Iron objects such as storage tanks and underground pipelines can be protected from corrosion by connecting them through a wire to a piece of: (A) Pb (B) Ag (C) Sn (D) Cu (E) Mg |
| 申論題 | 6 Give the chemical symbol for each of the following elements: 【題組】 (A) iron____ |
| 申論題 | 【題組】(B) Mercury____ |
| 申論題 | 【題組】(C) Potassium____ |
| 申論題 | 【題組】(D) Sodium____ |
| 申論題 | 7 Use the VSEPR model to predict the geometric shape of each of the following molecules and ions:
【題組】(A) BO33-____ |
| 申論題 | 【題組】(B) O3____ |
| 申論題 | 【題組】(C) PCI3____ |
| 申論題 | 【題組】(D) PbCI4____ |
| 申論題 | 8 Classify Hie bonds in each of (lie following substances as ionic，nonpolar covalant, or polar covalent:
【題組】(A) Cl2____ |
| 申論題 | 【題組】(B) PCl3 ____ |
| 申論題 | 【題組】(C) LiCl ____ |
| 申論題 | 【題組】(D) CIF ____ |
| 申論題 | 9 What is the chemical composition of each of the following:
【題組】(A) Soda water____ |
| 申論題 | 【題組】(B) Natural gas____ |
| 申論題 | 【題組】(C) Carbon black____ |
| 申論題 | 【題組】(D) Chalk____ |
| 申論題 | 10 What is the oxidation number of the halogen in each of the following molecules and ions? 【題組】 (A) CIO3-____ |
| 申論題 | 【題組】(B) H5IO6____ |
| 申論題 | 【題組】(C) BrF3____ |
| 申論題 | 11 Sulfur dioxide can behave both as an oxidizing agent and as a reducing ageut. Write a balanced equation to show SO2 acting as 【題組】 (A) an oxidizing agent |
| 申論題 | 【題組】(B) a reducing agent. |
| 申論題 | 12 Write a balanced equation for the reaction of each of the following with water.
【題組】 (A) phosphorus trichloride |
| 申論題 | 【題組】(B) lithium hydride |
| 申論題 | 13 Describe in terms of a and n orbital:
【題組】 (A) a double bond |
| 申論題 | 【題組】(B) a triple bond |
| 申論題 | 14 Make qualitative predictions about each of the following solubilities aud explain your predictions: 【題組】 (A) HCl(g) in water and in pentane, C5H12(l). |
| 申論題 | 【題組】(B) Water in liquid LIF and in gasoline. |
| 申論題 | 15 predict the sign of the Gibbs free energy change for the reactions at low temperature, for which 【題組】 (A) All is negative and AS is positive |
| 申論題 | 【題組】(B) All is positive and AS is negative Explain your predictions. |
| 申論題 | 16 Docs the concentration of a homogeneous catalyst appear in (lie rate law for a catalyzed reaction? Explain. |
| 申論題 | 17 Explain why oxalic acid can be used to remove rust stains. Write a balanced equation for the reaction involved. |
| 申論題 | 18 The value of equilibrium constant for a reaction increases as the temperature is increased. Is the forward reaction exothermic or endothermic? What can one say about the enthalpy change for the reverse reaction? |
| 申論題 | 19 Both sodium chloride and magnesium oxide are ionic solids, yet magnesium oxide melts at a temperature about 2000 K higher than sodium chloride. Explain why. |
| 申論題 | 20 Explain why the structural isomers dimethyl ether (bp = -23 °C) and ethanol (bp = 78.3 °C) differ significantly in their boiling points? What simple chemical test could be used to distinguish ethanol from dimethyl ether? |
| 申論題 | 1 • Write a balanced ionic equation to represent the oxidation of iodide ion by permanganate ion in basic solution to yield manganese (IV) oxide. (10%) |
| 申論題 | 2. Calculate the density of ammonia (NH3) in grams per liter at 752 mmllg and 55°C. (10%) |
| 申論題 | 3. A neutral atom of a certain element has 25 electrons, 【題組】(a) What is the electron configuration of the element? |
| 申論題 | 【題組】(b) How should the element be classified? |
| 申論題 | 【題組】(c) Are the atoms of this element diamagnetic or paramagnetic? (10%) |
| 申論題 | 4. 【題組】(a) Which atom should have a smaller first ionization energy: oxygen or sulfur? |
| 申論題 | 【題組】(b) Which atom should have a higher second ionization energy: lithium or beryllium? Give your reason. (10%) |
| 申論題 | 5. An organic compound has molecular formula of CH2O. 【題組】(a) Draw the most likely Lewis structure for the compound, |
| 申論題 | 【題組】(b) Indicate the hybridization orbitals and formal charge for carbon and oxygen atom in this molecule. (10%) |
| 申論題 | 6. Use the VSEPR model to predict the geometry of the following molecules and ions: 【題組】 (a) O3 |
| 申論題 | 【題組】(b) IF3 |
| 申論題 | 【題組】(c) I3-(l0%) |
| 申論題 | 7. Write the ground-state electron configuration for 02 by molecular orbital theory and show that it is paramagnetic. (10%) |
| 申論題 | 8. At 25°C, the vapor pressure of pure water is 23.76 nimllg and that of a dilute aqueous urea solution is 22.98 mmllg. Estimate the concentration in molality (m) of the solution. Urea is a nonvolatile compound. (10%) |
| 申論題 | 9. Describe the first law, the second law, and the third law of thermodynamics. (10%) |
| 申論題 | 10.Calculate the pH of a buffer system containing 0.10 M CH3COOII and 0.18 M CH3COONa. 10%) 
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| 99 |  is
(A) 60(B) 27 (C) 33 (D) 87
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| 99 | 2. Which of the following molecules has the highest H-X bond energy?(A)HF (B) HCI (C) IHBr (D) HI |
| 99 |  bond length?
(A) ethyne (B) polyethylene (C)  of the five-member ring in C60
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| 99 | 4.Which of the following molecules is polar? (A)CCl4 (B) PH5 (C) NO (D) C60 |
| 申論題 | 第二部分：塡充題（每個空格4分，共40分） 5. Identify the hybrid orbitals (e.g. sp, sp2, sp3) used by the underlined atoms in the following molecules: 【題組】(a) H2CCCH2 ____ |
| 申論題 | 【題組】(b)H2CCH2____ |
| 申論題 | 【題組】(c) CH3NNN ____ |
| 申論題 | 6. Write the expected electron configuration for these atoms:
【題組】(A) Si:______ |
| 申論題 | 【題組】 (B) Al;_______ |
| 申論題 | 7. Place the species below in order of shortest to longest N-N bond
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| 申論題 | 8. Write down the names of the elements with the following electron configurations: 【題組】 (A) 
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| 申論題 | 第三部分：問答題（共40分） 9. One of the most commonly used white pigments in paint is a compound of titanium and oxygen that contains 59.9% T'i (average atomic mass: 47.88 amu) by mass. Determine the empirical formula of this compound, (10 分）
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| 申論題 | 10. For VSEPR, repulsions from a lone pair and a bonding pair are different. Explain (10 分） |
| 申論題 | 11. The allene molecule has the following structure; H2OC=CH2
Are all four hydrogen atoms in the same plane? Explain your answer. (10 分）
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| 申論題 | 12. X-rays from a copper X-ray tube (λ = 1.54 A) were diffracted at an angle of 30.00 degrees by a crystal of silicon. Assuming first order diffraction (n = 1)，what is the inter-planar spacing in silicon? (write down the equation) (10 分） |
| 申論題 | 8. Write down the names of the elements with the following electron configurations: 【題組】(B) 
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| 99 | 1. Which of the following atoms has the largest first ionization energy? (A)F (B) Ne (C) Na (D) fie |
| 99 |  |
| 99 |  |
| 99 | 4. How many differenl structural isorners are present for C6H4? (A) 6 (B)5 (C)4 (D) 3 |
| 99 | 5. Which of the following molecules is the strongesl acid among lliem? (A) HF (B) I1C1 (C) HBr (D) HI |
| 申論題 | 第二部分：解釋名詞（每題5分，共30分） 【題組】 1. Bionsted-Lowry acids and bases |
| 申論題 | 【題組】2. Isotope |
| 申論題 | 【題組】3. Hess’s law |
| 申論題 | 【題組】4. Half-life |
| 申論題 | 【題組】5. Sublimation |
| 申論題 | 【題組】6. Rate-determining step |
| 申論題 | 第三部分：問答題（共45分） 1. Balance the following equation using the half-reaction method: (10%)
 |
| 申論題 | 2. Describe 【題組】 (a) Hie Lewis structures, (15%) |
| 申論題 | 【題組】(b) the molecular structures (VSEPR model) and |
| 申論題 | 【題組】(c) the hybrid orbitals of XeT4 |
| 申論題 | 3. Write the Lewis structure for O2F2- Assign oxidation states and formal charges to the aloms in O2F2 (10%) |
| 申論題 | 4. At 60 ℃，Kw is 1 x 10-3. Predict whether the autoionization reaction of H2O is exothermic or endothermic and explain your answer. (10 %) |
| 申論題 | 應按題目順序作答，列出答題推算步驟。 atomic weight: C = 12 , H = 1, O = 16, Na = 23, log2 = 0.3 【題組】1(a) Draw the Lewis structure with resonance structures for azide anion, N3- Indicate the value for the formal charge on each atom. (b) Draw the stereo-structure for the compound IF4+
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| 申論題 | 【題組】2(a) Draw the molecular orbital energy level diagram of N2 molecule. (b) Draw Lewis structures of the following ions, PtCI62-，NO3-，and CIO4-. Name the type of hybrid valence orbital and draw an orbital diagram for the hybrid orbital for the center atom.
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| 申論題 | 【題組】3(a) Describe the first law, second law, and third law of thermodynamics in words of q, w, △S, △G, △E, and △H. (b) Write the rate law for a first order and a second order reaction. What is the unit of first order reaction rate constant?
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| 申論題 | 【題組】4(a) Using the acetic acid(x g), sodium acetate(y g), and water(z mL) to prepare a buffer solution of pH 4.8. The acidity of acetic acid, Ka, is 1.8 x 10-5 (b) Write the equilibrium chemical reaction of methanol with K2Cr2O7 in acidic solution.
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| 申論題 | 【題組】5(a) Draw the condensed structural formulas for the following compounds: methyl te-butyl ether, isopropyl alcohol, acetaldehyde, polyester, nylon. (b) Draw and name all the possible structural isomers of organic compounds.
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