轉學考-普通化學

8. Calculate the following ratio of effusion rate at T1 \/ Effusion rate at T2 for a gas at Kelvin

9. Calculate the temperature at which the average kinetic energy of O2 gas is twice that of He gas a

10. The reduction potentials for Au³+ and Ni2+ are as follows: (Hint: 96500 x 1.73 = 167,000)  Calcu

11. To decrease the value of K for the following exothermic reaction, we should  2A(g)+B(g) ⇌ 2C(g)

12. Calculate the pH of the M NaOH aqueous solutions at 25°C. (A) pH ≈ 2.0 (B) pH ≈ 12 (C) pH

13. At 25°C, given that the Ka for HA is 3.5 x 10⁻⁸, calculate the K value for the reaction of HA wi

14. Which of the following species is present in the greatest concentration in a 0.100 M H2SO4 solut

15. A 10-mL sample of tartaric acid () is titrated to a phenolphthalein endpoint with 20. mL of 1.0

16. How many different possible triethylbenzenes exist? (A) 6 (B) 5 (C) 4 (D) 3 (E) 2

18. A solution containing 10. mmol of and 5.0 mmol of is titrated with 1.0 M HCl. What volume of H

21. Which of the following complexes shows geometric isomerism? (A) [Co(H2O)5Cl]SO4 (B) [Co(H2O)

20. The number of a certain radioactive nuclide present in a sample decays from 2.41 x 10² to 6.02 x

22. How many unpaired electrons are there in the complex ion ? For this ion, the nitrate ligands pro

17. When heat is added to proteins, the hydrogen bonding in the secondary structure breaks apart. Wh

23. What ions are very important for the proper functioning of biologic systems, such as nerves and

24. What is the expected osmotic pressure, in torr, of a 0.0100 M solution of NaCl in water at 25°C?

25. How many of the following molecules and ions contain double or triple bonds?  N2；H2CO；C2H4 ；C2H6

26. How many acceptable and equivalent resonance structures can be drawn for NO3¯? (A) 0 (B) 1

27. Which of the following molecules has a dipole moment? (A) SiCl4 (B) BCl3 (C) PCl3 (D) Cl2

19. A radioactive isotope of vanadium, , decays by producing β particles and gamma rays. The nuclide

28. A certain substance, X, has a triple-point temperature of 20°C at a pressure of 2.0 atm. Which o

29. Calculate △E for a system that releases 32 J of heat while 56 J of work is done on it. (A) 24

30. Which of the following statements is true for a monatomic ideal gas? (A) (B)= 2.5 R (C) Cv

31. Specify the hybridization of the nitrogen atom in each of the following, in order.   (A) sp³,

32. Identify the type of organic compound shown on right-hand side: (A) alcohol (B) ketone

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