and 
. A)–68.6%
B)–76.9%
C)–81.3%
D)–86.8%
| 所組別： | 化學學系 | 科目： | 基礎化學 | 考試時間： | 6月14日第1節 |
| 1. | A hexagonally close-packed structure has an A) ABCDABCD... pattern of layers and a coordination number of 4. B) ABCABC... pattern of layers and a coordination number of 12. C) ABABAB... pattern of layers and a coordination number of 12. D) ABBA... pattern of layers and a coordination number of 8. E) AABB... pattern of layers and a coordination number of 8. |
| 2. | Which of the following has the highest vapor pressure at room temperature?
A) water, H2O , B)methanol, CH3OH , C)acetic acid, CH3COOH, D)ethanol, CH3CH2OH , E)dimethyl ether, CH3OCH3 |
| 3. | The cubic unit cell of an ionic compound has A cations at the corners and
at the body center, and B anions at the face centers. What is the empirical formula of the
compound? A) A2B3, B)AB , C)AB2, D)A9B6, E)A5B6 |
| 4. | During complex titration of a metal ion, the indicator changes color when
the metal ion concentration changes A)100 times, B)50 times, C)10 times. |
| 5. | The Fajans method of Chloride titration, A)adsorption indicator, B)complex indicator, C)oxidation indicator is used |
| 6. | If f is the fugacity of the nonideal gas, in what condition f® P ? A) f® 1 B) p® 1 C) T® 0 D) P® 0 |
| 7. | The second law of thermodynamics is A)dS<0 B)dS³ 0 C)dU=0 D)dW³ 0 |
| 8. | The point group of CH4 is A)C3 B)C3v C)D3h D)Td |
| 9. | Which of the following complexes has the weakest C-O bond ? A)Mo(CO)3(PF3)3 B)Mo(CO)3(PCl3)3 C)Mo(CO)3(PMe3)3 D)Mo(CO)3(PClPh2)3 |
| 10. | What is the pH of a solution that results when 0.010 mol HNO3
is added to 500.0 ml of a solution that is 0.10 M in aqueous ammonia and 0.20 M in
ammonium nitrate. Assume no volume change. ( The Kb for NH3=
1.8 x 10-5.) A)8.00 B)8.95 C)5.05 D)2.00 |
| 11. | For a particular chemical reaction, LH = 5.5 kJ
and LS = -25 J/K. Under what temperature conditions is the
reaction spontaneous? A)When T< -220 K. B)When T< 220 K. C)The reaction is spontaneous at all temperatures. D)The reaction is not spontaneous at any temperatures. |
| 12. | Which of the following spectroscopic method is not based on the signals
caused by electronic transitions: A)Fluorescence spectroscopy B)UV/Vis absorption spectroscopy C)Atomic absorption spectroscopy D)Infrared spectroscopy E)Phosphorescence spectroscopy. |
| 13. | Which of following method is most suitable for detection of metals in
aqueous solutions: A)Auger spectroscopy B)High performance liquid chromatography C)X-ray photoelectron spectroscopy D)Infrared spectroscopy E)Atomic emission spectroscopy |
| 14. | Which of the following is a radical ? A)O2- B)ClO- C)Cl-O-O-Cl D)NO+ E)S2O4-2 |
| 15. | Which statement about atomic orbital is true? A)The energy of 3p orbital is always higher than that of 3s. B)For helium atom, there is no 3p orbital. C)The energy of 1s orbital in helium atom is lower than that of 1s orbital in hydrogen atom D)An electron in s-orbital has zero probability of being found at the nucleus. E)The contour map of an s-orbital has two lobes on opposite sides of the nucleus. |
| 16. | How many of the molecules C2, B2, H2, and N2 are paramagnetic ? A)0 B)1 C)2 D)3 E)4 |
| 17. | Which of the following has the largest bond energy ? A)O2 B)O2- C)O22- D)O2+ E)O22+ |
| 18. | Which of the following elements does not involve in the dioxygen transport
in biology: A)Pt; B)Fe; C)Cu. |
| 19. | Which color do you normally observe when alkali metals such as potassium
was dissolved in liquid NH3? A)blue; B)yellow; C)red; D)purple; E)colorless. |
| 20. | What property will not be affected by a catalyst in a reaction? A)Activation energy, B)Gibbs energy, C)reaction path, D)rate constant. |
| 21. | How many nodes in probability density plots for 4S hydrogen-like-orbital? A)0, B)1, C)3, D)4. |
| 22. | Find the relative error introduced by neglecting activities in calculating
the solubility of Ba(IO3)2 in a 0.033 M solution of
Mg(IO3)2. The thermodynamic solubility product for
Ba(IO3)2 is 1.57 ´ 10-9. The
and . A)–68.6% B)–76.9% C)–81.3% D)–86.8% |
| 23. | The replicate determination of the lead content of a blood sample is of
the following: 0.752, 0.756, 0.752, 0.751, and 0.760 ppm Pb. What is the coefficient of
variation (CV) of this set of data? A)0.53% B)0.45% C)0.56% D)0.49% |
| 24. | When water molecules pull ions away from a crystal structure the process
is called _______. A)solvation B)hydration C)ionization D)hydrolysis |
| 25. | The final products of the reaction of baking soda with acid （H+）are
_______. A)Na2O and CO2 B)NaOH and CO2 C)NaOH and H2CO3 D) Na+, CO2, and H2O |
---END---