[化學] 中興化學問題
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.
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98.3. Consider the following chemical reaction: 2A + 2B → C Overall reaction
已解決!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
→請問這樣列是錯哪?
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
已解決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.
→是否選E,不可逆表自發,但其被ignite才氣體膨脹？
98.10. Which of the following statements is wrong about thermodynamics ?
(A) The entropy of any substance(element or compound)in its equilibrium
已解決 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
→此題ΔG是否要除以2使Al係數為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
→請問這定律是？
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
→請問G是？1. K↑,G= -RTlnK (兩個變因 T↓K↑)
2. K↑,G= H-TS, T減少到負值，此時G↑ 故選A？
94.非選擇題1. Please describe how to set up the physical structure of atom using the
experimental findings.
題目有點多T_T 今天被教授劣退 有請各位大大幫忙了!感恩!!
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※ 編輯: sparkle0829 來自: 218.172.3.57 (07/02 23:30)
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