19. Which of the following compounds (11-15) is not monosaccharide? (A)11 (B) 12 (C) 13 (D) 14 (E) 1
20. Each of the longest wavelength of the spectral lines recorded for two electrontransitions from n
21. As shown in Fig, 1, a container with africtionless movable partitionsfixed volume at constant te
22. Which of the following groups of species can coexist in significant amounts in agiven solution a
24. A certain amount of Cl2is introduced into an/molecertain concentration of potassium hydroxide 0.
25. Based on the following experiments, which substance can prove to bebleaching?(A) When chlorine i
26. Two bottles of gas are NO2(g) and Br2(g) with the same appearance. A chemistdesigned a variety o
27. At 298 K and 101 kPa, 2 . Atthe same temperature and pressure, 2 moles of SO2 and 1 mole of O2 a
28. After electrolyzing a certain concentration of copper sulfate solution with an inertelectrode at
29. Acetic acid is an electrolyte. Which of the following facts indicate that acetic acidis a weak e
30. Five different types of chemical bonds in the molecularstructure of ethanol are shown in Fig. 3.
1. 磷在鹼性溶液中發生自身氧化還原反應，反應式如下：P4 + HO– + H2O → PH3 + H2PO2–則P4在此反應中做為氧化劑的角色占多少百分比？(A) 10% (B) 25% (C) 5
3. 在大氣壓力為 600 mmHg 的環境下，在內徑一定且一端封閉的試管中，先充入一定量的空氣後再加入 200 mmHg 的汞柱。當試管口垂直朝上時，量得空氣柱長 x cm；若試管口垂直朝下時，量得
6. 下列氧化還原滴定，75 mL的0.150 M雙氧水(H2O2)當達到當量點時，需要多少毫升的0.150M 過錳酸鉀水溶液?MnO4– + H2O2 + H+ → Mn2+ + H2O + O2(
8. 某溶液中含有硝酸鉀、硝酸鉛、硝酸銅及硝酸鋇，今欲逐一分離以鑑定各鹽時，則下列各試劑加入的先後順序為何？(A) 硫酸鉀 → 碳酸鉀 → 氯化鉀 (B) 碳酸鉀 → 氯化鉀 → 硫酸鉀(C) 硫酸鉀