資訊推薦

• 5. How many of the following molecules or ions (IO2F2-, TeF4, ICl3, XeF4, ClO4-, SOF4) have see-saw
• 6. How many molecules or ions listed in Problem 5 have a hybridization of dsp³ on the central atom?
• 7. How many of the followings (CN-, NO-, O2, OF⁺, OF-) are paramagnetic? (A)1 (B)2 (C)3 (D)4
• 8. Rank the following 0.10 M solutions in order from most acidic to most basic:(1)CaBr2, (2)KNO2, (3
• 9. In a common car battery, six identical cells each carry out the following reaction:Pb + PbO2 + 2H
• 10. The reaction 2A + B → C has the following proposed mechanism: Step 1: A+B⇌D (rate constant: k₁ a
• 11. Consider the titration of 50.0 ml of 0.10 M acetic acid (Ka= 1.8x10⁻⁵) with 0.10 M NaOH. Calcula
• 12. Same as Problem 11, but calculate [H+] (in M) if 50.0 ml (total) of NaOH is added? (A)1.9x10
• 13. The complex FeL6²⁺, where L is a neutral ligand, is known to be diamagnetic. The number of d ele
• 14. For the process Co(NH3)5Cl²⁺ + Cl⁻ → Co(NH3)4Cl2 + NH3, what would be the ratio of cis to trans
• 15. Consider 2.0 mole of a monatomic ideal gas that is taken from state A (PA= 2.0 atm, VA= 10.0 L)
• 16. Same as Problem 15, but calculate ΔHBC (in atm L). (A)-38 (B)-60 (C)-75 (D)-82 (E)-90
• 17. Same as Problem 15, but calculate ΔSAB. (A)(5\/2)Rln2 (B)5Rln3 (C)3Rln3 (D)(5\/2)Rln3
• 18. Consider a face-centered cubic unit cell. What's the fraction of the space actually occupie
• 19. Which of the following compounds doesn't react with the acidic KMnO4 solution? (A)propa
• 20. Which of the following is optically active (that is, chiral)? (A)dimethylamine (B)difluorom
• 21. When heat is added to proteins, the hydrogen bonding in the secondary structure breaks apart. Wh
• 2. The limiting reactant in a reaction (A)is the reactant for which you have the least number of
• 3. A solution contains the ions Ag+, Pb2+, and Ni2+. Dilute solutions of NaCl, Na2SO4, and Na2S are
• 4. Consider three 1-L flasks at the same temperature and pressure. Flask A contains CO gas, flask B
• 5. Consider the following equilibrium:N2(g) + 3H2(g) ⇄ 2NH3(g)with K = 2.3 × 10-6. 1.00 mol each of
• 6. As water is heated, its pH decreases. This means that (A)[OH-] > [H+]. (B) [H+] >[OH
• 7. The reaction Cr(s) + NO3¯(aq) → Cr3+(aq) + NO(g) takes place in acidic solution.What is the coeff
• 8. For a particular process q = -10 kJ and w = 25 kJ. Which of the following statements is true?
• 9. For the reaction H2O(l) → H2O(g) at 298 K, 1.0 atm, ΔH is more positive than ΔE by 2.5 kJ\/mol.T