16. Which of the following compounds exhibits only dispersion and dipole-dipole intermolecular interactions?
(A) H₂
(B) HI
(C) CO₂
(D) CH₃NH₂
(E) CH₃OH

12. Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. (A) (B) (C) (D) (E)

13. Draw the Lewis structure for . What is the hybridization on the Br atom? (A) sp3d2 (B) sp3d (C) sp3 (D) sp2 (E) sp

14. Using the VSEPR model, the molecular geometry of the central atom in SO2 is ________ (A) linear (B) trigonal planar (C) tetrahedral (D) bent (E) trigonal pyramidal

複選題15. Place the following substances in order of increasing vapor pressure at a given temperature.  NF3 NH3 BCl3 (A) NH3＜NF3＜BCl3 (B) NF3＜NH3＜BCl3 (C) BCl3＜NF3＜NH3 (D) NH3＜BCl3＜NF3 (E) BCl3＜NH3＜NF3

17. Which of the following statements is TRUE? (A) The solubility of a solid is not dependent on either temperature or pressure. (B) The solubility of a solid is highly dependent on pressure. (C) The solubility of a solid is highly dependent on both pressure and temperature. (D) The solubility of a solid is highly dependent on temperature. (E) None of the above.

18. Consider the following reaction at equilibrium. What will happen if we add more SO3 in the system? SO2(g)+NO2(g)⇌ SO3(g)+NO(g) (A) The reaction will shift in the direction of products. (B) The reaction will shift to decrease the pressure. (C) No change will occur since SO3 is not included in the equilibrium expression. (D) The reaction will shift in the direction of reactants. (E) The equilibrium constant will decrease.

19. Which Br Φnsted-Lowry acid is not considered to be a strong acid in water? (A) HI (B) HBr (C) H2SO3 (D) HNO3 (E)HCI

20. Which of the following is a Lewis acid? (A) BCl3 (B) CH4 (C) NH3 (D) CHCl3 (E) None of the above are Lewis acids.

21. When titrating a weak monoprotic acid with NaOH at 25℃, the (A) pH will be less than 7 at the equivalence point. (B) pH will be equal to 7 at the equivalence point. (C) pH will be greater than 7 at the equivalence point. (D) titration will require more moles of base than acid to reach the equivalence point. (E) titration will require more moles of acid than base to reach the equivalence point.

22. Which of the following statements is TRUE? (A) Entropy is not a state function. (B) Endothermic processes decrease the entropy of the surroundings, at constant T and P. (C) Endothermic processes are never spontaneous. (D) Exothermic processes are always spontaneous. (E) None of the above are true.