教甄化學專業/化工科

31. 下列哪一個原子或離子具有 3 個不成對電子？ (A) (B) Ga (C) S (D) Co

23. One mole of an ideal gas (Cv = 2R), initially at X, undergoes three reversible steps of a cycle

21. A certain liquid (X) has a normal boiling point of 353 K. The densities (in g\/L) of the vapor

22. A battery is constructed from two half cells: Zn|Zn2+(1.0 M) and Mn|Mn2+(1.0 M)； the volume of e

20. It took 2 min for 0.20 L of H2 to effuse through a pin hole. How long will it take (in min) for

19. For an ideal gas, which of the following sets of variables has a linear relationship? (A) P vs.

18. Consider the equilibrium: PCl5(g)PCl3(g) + Cl2(g), Kc = 0.025 at 400 K. If 0.5 mol of PCl5 is pl

17. Which operation will increase the quantity of product for the exothermic reaction:2SO2(g) + O2(g

15. For a triprotic acid H3A with pK1 = 3.0, pK2 = 6.0 and pK3 = 9.0, which of the following relatio

16. Which of the following statements is correct? (A) a saturated solution contains a high concentra

14. Decomposition of 2.76 g M2CO3 yields 1.88 g M2O. What is the atomic mass of M? (A) 9 (B) 23 (C)

13. One mole of an ideal gas (Cv = 20 J•K-1 •mol-1 ), initially at 1.0 atm and 300 K, absorbs 100 J

12. Which of the following compounds would have the largest melting point? (A) NaCl (B) KCl (C) MgO

10. Which of the following elements has the lowest second ionization energy? (A) B (B) C (C) N (D) O

11. For Ag+ ion in its ground state, what is the number of electrons that have ml = 0 and ms = -1\

9. Adding CH4(g) into a fixed-volume flask containing O2(g) until the pressure is tripled, how many

8. For an isothermal and reversible compression of an ideal gas, which of the following relations is

7. For the condensation of water vapor at 1 atm and 25°C (H2O(g) → H2O(l)), which of the following r

5. The solubility of Ag2CrO4(s) in water is 10000 times that of Ag2CrO4(s) in 0.020 M AgNO3(aq). Wha

6. Consider the concentration cell: Cu | Cu2+ (5.0 ✖ 10-5 M)||Cu2+ (0.50 M)|Cu. What is the cell po

4. For two monoprotic acids (HA, HB) and their conjugate bases (A- , B- ), the following relations a

3. Ionization of water is an endothermic process with pKw = 14.0 at 25°C. For pure water at 37°C, wh

2. What is the volume (in mL) of 1.0 M NaOH(aq) that must be added to 1.0 M, 60 mL HA(aq) to make a

30. 如果將 30 mL 的 5.0×104 M Ca(NO3)2 添加到 70 mL 的 2.0×104 M NaF 中，是否會產生沉澱？（CaF2 的為） (A) 不會，因為離子產物大於 (B)

29. 利用擴散現象分離下列各組物質時，分離最差的是哪一組？ (A) O2、SO2 (B) He、CH4 (C) CH4、O2 (D)

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