64. A result of the common-ion effect is ________. (A)that some ions, such as Na+ (aq), frequently a
66. The hydride ion, , is a stronger base than the hydroxide ion, O . The product(s) of the reaction
67. Which one of the following has the weakest conjugate base? (A)HF (Ka = 6.8 × 10-4) (B)HClO (Ka =
68. Which one of the following will change the value of an equilibrium constant? (A)changing tempera
69. The equilibrium constant for the gas phase reactionis Keq = 4.34 × 10-3 at 300 °(C) At equilibri
72. When argon is placed in a container of neon, the argon spontaneously disperses throughout the ne
76. The unit cell with all sides the same length and all angles equal to 90° that has lattice points
73. When solutions of strong electrolytes in water are formed, the ions are surrounded by water mole
74. Pairs of liquids that will mix in all proportions are called ________ liquids. (A)miscible (B)un
77. CsCl crystallizes in a unit cell that contains a Cs+ ion at the center of a cube and a Cl- ion a
75. A solid has a very high melting point, great hardness, and poor electrical conduction. This is a
79. The ease with which the charge distribution in a molecule can be distorted by an external electr
49. 下列用來描述圖中之三肽分子結構的序列(peptide sequence) (從 N 端到 C 端)，請問何者正 確？ (A) Val–Phe–Met (B) Gly–Phe–Cys (C) G
47. 已知維生素 D3(Vitamin D3)是一種經由照光所進行的光化學合成反應產物。關於此光化學 反應過程如下所示，請問下列反應過程中，第一步的化學反應是何種反應？ (A) σ-轉位重排(sig
46. 下列有關纖維素(cellulose)之描述何者正確？ Ⅰ. 與澱粉具有相同之單體 Ⅱ. 由葡萄糖所鍵結而成 Ⅲ. 具有醣苷(α-glycoside)鍵結 Ⅳ. 在酸的條件下容易水解成小單元 (