98.1. A diagram of "Pressure" vs "Volume" is shown below. Route A represents an isothermal expansion; Route B represents an adiabatic expansion. Which of the following statement is wrong ? (A) Route A does more work than that of Route B (B) Each point in the diagram corresponds to a temperature (C) The temperature drops more rapidly in Route A than that of Route B while expansion. (D) While expansion, the Route A exchanges energy with the surrounding (E) None of the above. ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ 98.3. Consider the following chemical reaction: 2A + 2B → C Overall reaction 已解决!Reaction mechanism: Step1. A+B→D Step2. D+B→M Step3. A+M→C Which one of the following rate laws is consistent with this mechanism? (A) Rate = k[A]^2 [B] (B) Rate = k[D][B] (C) Rate = k[A][B] (D) Rate = k[A] [B]^2 (E) The information is not sufficient →请问这样列是错哪? Step3: K2 = [M]/[D][B] ; K1 = [D]/[A][B] ; [M]=K2[D][B]=K2K1[A][B]^2 Rate[C] = K3[A][M] = K1K2K3 [A]^2 [B]^2 98.6. Gasoline was injected into the cylinder and was ignited. A piston moved 已解决outwardly of the cylinder while exposition took place inside the motor engine. Which of the following statements is not accurate ? (A) It is an example of converting chemical energy to mechanical work. (B) The motor engine had done work to the surrounding. (C) The temperature dropped down after the piston moved out. (D) All the energy released from the burning of gasoline was converted to the work done to the surrounding. (E) It was an irreversible process. →是否选E,不可逆表自发,但其被ignite才气体膨胀？ 98.10. Which of the following statements is wrong about thermodynamics ? (A) The entropy of any substance(element or compound)in its equilibrium 已解决 state approaches zero at the absolute zero of temperature. (B) The absolute value of the Gibbs free energy of a substance can't be determined. (C) The Gibbs free energy is zero during phase transitions of a pure substance. (D) The absolute value of the entropy of a substance can't be determined. (E) A spontaneous process is always an irreversible process. 95.20. Using the following data: M → M+ + e- -E= -0.5V The solubility product(Ksp) for MX(s)is 2.1x 10^-11 Please calculate the value of ξ for the half reaction: MX + e- → M + X- ; log(2.1x10^-11) = -10.68 (A) 0.13V (B) -0.13V (C) 1.13V (D) -1.13V 95.26. For the reaction 2Al(s) + 3Co2+(aq) → 2Al3+(aq) + 3Co(s),ΔG= -799kJ. What is the E for a standard cell based on this reation ?(F=96500C/mol) (A) +2.76V (B) +1.38V (C) +8.28V (D) +4.14V →此题ΔG是否要除以2使Al系数为1？ 95.29. What is W in Boltzmann's formula, S=k x InW (A) a fraction indicating the probability of obtaining a result (B) a random number (C) the number of ways of obtaining the state (D) the work times Avogadro's number →请问这定律是？ 94.18. If the temperature of the reaction is decreased, what is the effect on the equilibrium constant and ΔG ? N2(g) + 3H2(g) → 2NH3(g),ΔH+ = -92.4 kJ/mol (A) K increases, ΔG increases (B) K decreases, ΔG decreases (C) K increases, ΔG decreases (D) K decreases, ΔG increases (E) Temperature does not affect equilibrium or ΔG →请问G是？1. K↑,G= -RTlnK (两个变因 T↓K↑) 2. K↑,G= H-TS, T减少到负值，此时G↑ 故选A？ 94.非选择题1. Please describe how to set up the physical structure of atom using the experimental findings. 题目有点多T_T 今天被教授劣退 有请各位大大帮忙了!感恩!! --

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