複選題

6. (15 points total) Ethylene glycol (C₂H₆O₂) is added to 15.0 L water to produce an antifreeze solution that has a freezing point of -30 °C.
(A) (5 points) Calculate the molality of ethylene glycol of this solution.
(B) (5 points) Calculate the volume of ethylene glycol in L needed to produce such solution.
(C) (5 points) What is the boiling point of this solution?

複選題2. (20 points total) Calculate the pH when 100.0 mL of a 1.00 M solution of H2A () is titrated with the following volumes of 1.00 M NaOH. (A) (5 points) Calculate the initial pH of the solution. (B) (5 points) Calculate the pH of the resulting solution after 75.0 mL of 1.00 M NaOH has been added. (C) (5 points) Calculate the pH of the resulting solution after 100.0 mL of 1.00 M NaOH has been added. (D) (5 points) Calculate the of the resulting solution after 200.0 mL of 1.00 M NaOH has been added.

複選題3. (10 points total) Give a short answer for the following questions: (A) (2 points) What is the maximum number of electrons per orbital? (B) (2 points) The five 4d orbitals can collectively hold how many electrons? (C) (2 points) Each electron in the 8s orbital would have what four quantum numbers? (D) (2 points) How many corresponding orbitals are there for l = 2? (E) (2 points) What is the lowest energy "f" orbital?

複選題5. (16 points total) At room temperature, Fe crystallizes in a body centered cubic structure. The radius of an iron atom is 124 pm. (A) (3 points) How many Fe atoms are there in a unit cell?          Show your work.       (B) (4 points) What is the volume of a unit cell      in cm³     ? (C) (4 points) What is the mass of a unit cell      in grams?     (D) (5 points) Calculate the density of Fe      in g/cm³.     

複選題7. (14 points total) Consider two coordination compounds: Na3 [CoF6] and [Co(NH3)6]Cl3, one of them is high-spin and the other one is low-spin: (A) (4 points) Give the name for both compounds. (B) (6 points) Draw the crystal field splitting diagrams for both compounds and fill in the electrons into the diagram. Which one is high-spin, and which one is low-spin? Are they paramagnetic or diamagnetic? (C) (4 points) One of the compounds is green color and the other one is orange color. Which one is most likely to be green? Which one is most likely to be orange? Briefly explain your choice.

50. 下列哪一種聚合物不是由取代乙烯單體所構成？ (A) nylon (B) Teflon (C) polystyrene (D) polypropylene

49. 下列何者為掌性(chiral)分子？ (A) cis-1,2-dichlorocyclohexane (B) trans-1,2-dichlorocyclohexane (C) cis-1,4-dichlorocyclohexane (D) trans-1,4-dichlorocyclohexane

48. 關於 的八面體錯合物，下列敘述何者正確？ (A) 強場(strong field)和弱場(weak field)錯合物均為反磁性。 (B) 強場錯合物是反磁性的，弱場錯合物是順磁性。 (C) 強場錯合物是順磁性的，弱場錯合物是反磁性。 (D) 強場和弱場錯合物均為順磁性。

47. 進行 α 衰變的產物為何？ (A) (B) (C) (D)

46. 反應的產物中，順式與反式異構體的比例為 何？ (A) 1:2 (B) 1:4 (C) 2:1 (D) 4:1

45. 下列分子的 IUPAC 系統命名為何？ (A) 1-bromo-5,5,5-trichloro-2-pentene (B) 1,1,1-trichloro-5-bromo-3-pentene (C) 5-bromo-1,1,1-trichloro-3-pentene (D) 5,5,5-trichloro-1-bromo-2-pentene

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