61. Which of the following solution has shown the correct titration curve?
(A) NH₃
(B) CO₃^2-
(C) HCN
(D) PO4 ^3-
(E) NaOH

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? (A) n = 3, = 1 (B) n = 2,= 0 (C) n = 2, = 1 (D) n = 3, l = 2 (E) n = 2, = 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.

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? (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. (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.