阿摩線上測驗 登入

110年 - 110 國立臺灣大學_碩士班招生考試_藥學、口腔生物科學研究所:物理化學(B)#101963

科目：研究所、轉學考(插大)◆物理化學 | 年份：110年 | 選擇題數：9 | 申論題數：4

試卷資訊

所屬科目：研究所、轉學考(插大)◆物理化學

選擇題 (9)

複選題

1. For the reaction 2N2O5(g) 4NO2(g) + O2(g). (AB) The amount of NO2 in the reaction container is four times the amount of O2regardless how the reaction mixture is prepared for the reaction to oceur. (AC)At the moment when N2O5(g) is first transferred to the empty reaction container. the rate of disappearance of N2O5 is more than two times the rate of formation of O2. (AD) At any instant. the rate of formation of NO2 is two times the rate of disappearance of N2O5. (AE) The reaction is a second-order reaction. just like any reactions of 2M2N5 → 4MN2 + N2. (BC)If the measured initial rates are615bc6ba4fe53.jpg M/sec for the initial concentrations of N2O5 of 0.0050 M and 0.010 M. respectively, the overall reaction order is one. (BD) The activation energy of the reaction may be derived from measuring the rate constants at two different temperatures.
複選題
2. Which of the following statements related to chemical bonding is (are) correct? (AB) The hybrid orbital used by the N atom in urea. H2NCONH2. is sp3. (AC) H2S has greater ionic character than H2O. (AD) The bond enthalpies (kJ/mol) of C-H. C-C. C=C. C-Br. H-Br. and Br-Br are 412. 348. 612. 276. and 366. and 193. respectively. The heat released when ethane. CH2=CH2. reacts with HBr to produce CH3CH2Br is 58 kJ/mol. (AE) Highly clcctroncgative atoms have low ionization energies and high electron affinities. (BC) NO2 is not a radical. (BD)The electronic configuration in the oxide ion in BaO is [He]2s22p6.
複選題
3. Which of the following statements is (are) correct? (AB) Electron diffraction by a crystal can support de Broglie's hypothesis of the wave nature of matter. (AC) Ultraviolet light, microwav ves, and gamma rays travel through empty space at different speed. (AD) Speeding tickets based on the radar reading are uncertain becausc of the Heisenberg uncertainty principle. (AE) People have difficulty in measuring both the position and velocity of objects in everyday life. (BC) The kinetic energy of the electrons ejected by the incident radiation increases with the radiation intensity. (BD) For the hydrogen atom. the Lyman series of lines are found only in the ultraviolet region of the spectrum.
複選題
4. Which of the following kinetics statements is (are) correct? (AB) If the rate of a reaction increases by a factor of 8 when the concentration of a reactant increases by a factor of 2. the order of the reaction with respect to this reactant is 4. (AC) Decomposition of nitrous oxide is a zero-order reaction. (AD) The rate law of a reaction can be predicted from reaction stoichiometry. (AE) The rate law of a zeroth-order reaction is rate = k. (BC) An enzyme-catalyzed reaction may appear to be zero-order if the number of enzyme molecules in the reaction is limited in relation to substrate molecules. (BD) Even complex biological processes may exhibit Arhenius behavior within certain temperature ranges.
複選題

5. Which of the following processes result(s) in an increase in entropy? (AB) Expanding I mol of oxygen gas isothermally to twice its original volume. (AC) Doubling the pressure of I mol of nitrogen gas isothermally. (AD) Compressing I mol of nitrogen gas isothermally to half of its original volume. (AE) Increasing the temperature of I mol of argon gas at constant pressure. (BC) Freezing the crystal of 1 g of Nacl. (BD) Water of 1 mL. losing cnergy reversibly at 25℃.
複選題
6. Which of the following statements is (are) correct? (AB) Boron is not a metalloid. (AC) In quantum systems. as the mass of the particle in a one-dimensional box becomes larger. the separation between neighboring energy levels decreases. (AD) The total number of orbitals in a shell with principal quantum number 4 is 8. (AE) The total number of nodal planes present in the orbitals having the set of quantum numbcrs n=3 and (=2 is 10. (BC) The probability of finding an electron at the nucleus in a p-orbital is zero. (BD) The zero-point energy in 1.3.5.7-octatetraene is larger than in 1.3-butadiene.
複選題

7. The reaction of NO with Clz proceeds in a fixed container as follows.
615bc7925126e.jpg
Which of the following statements is (are) correct? (AB) The forward rate cquals the reverse rate when the reaction is in equilibrium. (AC) The reaction rate is determined by the collision between NO(g) and Cl2(g) molecules. (AD) Increasing the concentration of Cl2(g) will increase the reaction rate. (AE) Removing NOCI(g) from the reaction mixture will increase the reaction rate. (BC) The reaction is a second-order reaction. (BD) The unit of k in the rate law of the reaction is L/mol-s. if the concentration of the reactant is expressed in mol/L and the rate in mol/L-s.

8. Which of the following thermodynamics statements is (are) correct? (AB) A closed system cannot exchange energy with the surroundings. (AC) The work done by a construction worker. weighing 60 kg, who climbs to the roof a 50-m tall building is about 29 kJ. (AD) Asystem at lower temperature has a greater intemal energy than the same system at a higher temperature. (AE) The internal energy of molecules is stored only as molecular potential energy. (BC) The total motional contribution to the molar internal energy of gascous H2O at 25℃is 7.43 kJ/mol. (BD) The equipartition theorem states that every degree of freedom that appears only quadratically in the total energy contributes R to the system's heat capacity.
複選題
9. A particle trapped inside a one-dimensional box (AB) is likely to be found at one position than another in classical systems. (AC) cannot moves at any speed within the box in classical systems. (AD) only occupy certain energy levels if the box size is on the scale of a few nanometers. (AE) can have zero energy if the box size is on the scale of a few nanom meters. (BC) may never be detected at certain positions if the box size is on the scale of a few nanometers. (BD) resuits in four wavelengths equaling the size of the box for n=4. if the box size is on the scale of a few nanomcters.

申論題 (4)

II. Physical chemistry concepts and calculations
 10. Discuss in detail (a) (i) collision theory and (il) transition state theory taught in chemical kinetics: (b) (i) Hess's law and (ii) Bomn-Haber cycle taught in thermodynamics. (20%)
11. Assume 2,000 mol O2(g) at 298.0 K and 1.00 atm behaves ideally. Calculate (i) the change in internal energy and (ii) the final temperature of the oxygen gas when 200.0 J of energy is transferred as heat to the gas at (a) constant volume: (b) constant pressure. (11%)
12. (a) A sample of ideal gas at 244 K and 2.00 atm expands from 10.0 L to 20.0 L by two different paths. Path A has two parts. In the first step. the gas is cooled at constant volume to 1.00 atm. In the second step. the gas is heated and allowed to expand against a constant external pressure of 1.00 alm until its volume is 20.0 L and T = 244 K. Path B is an isothermal. reversible expansion to reach a final pressure of 1.00 atm. Calculate for each path (i) the work done. (ii) the heat transfered. and (iii) the change in internal energy. (b) Discuss the difference in the calculated results obtained in (a) between Paths A and B and explain how the concept of state function is revcaled. (c) Can the results obtain in (a) be used to support the first law of thermodynamics? Explain. (13%)
13. A nonspontaneou us reaction can be driven to occur in biological systems by using a reaction that produces a lot of entropy in the surrounding for building and maintaining their intricate functions. Use any biological reactions as examples to discuss the physical chemistry principle behind the drive and address the related Gibbs fice encrgy changes in biological systems. (For examplc. the hydrolysis of adenosine triphosphate (ATP) to adenosine diphosphate (ADP) is the reaction used most frequently by organisms to couple and drive nonspontancous reactions. Eating food that contains glucose can heip to restore ADP back to ATP by combustion of glucose in our bodies. However. you can use whichever the reaction you know the best to answer this question.) 让脂嘘半的同 (12%)