18. What is the formation rate of the product [P]?
(A)
(B)
(C)
(D)
(E)

19. The formation rates of product are measured under different reaction conditions, choose the incorrect statement. (A) If the second reaction is extremely slow, the reaction is first order with respect to the partial pressure of A. (B) If the second reaction is extremely slow, the reaction rate can be increased by increasing the equilibrium constant of the first reaction. (C) If the second reaction is extremely fast, the reaction rate is independent of the partial pressure of S. (D) Holding the initial partial pressure of A constant, the reaction approaches zero order in high pressure regime. (E) Holding the initial partial pressure of A constant, the reaction approaches first order with respect to the partial pressure of S in low pressure regime.

20. What is the apparent activation energy in high pressure regime (by only varying the partial pressure of S)? (A) E1 - E2 -E-1. (B) E1- E2+E-1. (C) E1+2E2+E-1. (D) 2E1-E2-2E-1. (E) E1 + E2-E-1. 

複選題21. For an isothermal and irreversible expansion process (V1 to V2) of an ideal gas, which following statement is correct? (A) △S = q/T (B) △S =nRin(V2/V1) (C) w=-nRTIin(V2/V1) (D) △Ssys + △Ssurr >0 (E) q=nRTin(V2/V1)

複選題22. He(g) (n mole) is taken from state 1 (P1, V1) to state 4 (P4, V4) through state 2 (P2, V2) or state 3 (P3, V3). Assuming He(g) obeys ideal gas law, choose the correct statement. (A) w = 0 from state 2 to state 4. V.-30 L (B) q=from state 1 to state 2. (C)△H = n from state 1 to state 3.  (D) △H = q from state 3 to state 4. (E) Pathway A (through state 2) and pathway B (through state 3) have the same △H.

複選題23. Given a sequential reaction below, choose the correct statement assuming k1 ＜k2.  (A) At the same conversion, the selectivity of B can be improved by increasing the reaction temperature. (B) The |m| (m = slope) of the curve of the first reaction is smaller than that of the second reaction in the Arrhenius plot. (C) With the same reaction time, adding a catalyst to catalyze the second reaction can improve the yield of C. (D) The apparent activation energy of the whole sequential reaction is closer to the activation energy of the second reaction. (E) The second reaction has a lower activation energy. 

複選題24. Considering parallel reactions forming P1 and P2 from A, choose the correct statement given the potential energy diagram on the right side.(A) There is an intermediate from A to P2. (B) P2 is the kinetically controlled product. (C) With a catalyst significantly increasing the rate from B to P2, the selectivity towards P2 can be improved by lowering reaction temperature. (D) There are three transition states in this potential energy diagram. (E) P2 is the thermodynamically controlled product.

1. 根據圖(一)，下列敘述何者正確？(A)f'(2)=0(B)=-3(C)=2(D)f(5)=2

2. 若，求=？ (A) – 13 (B) – 11 (C) – 9 (D) – 7

3. 已知(0 , 0)、(-1 ,-3)、(-1, 3)、(-4, 0)為f(x, y)=x3+xy2+6x+y2的臨界點，則f(x,y)的相對極大值=？ (A)f(2 ,-3)(B)f(-4, 0)(C)f(0, 0) (D)f(-1 ,-3)

4.=？ (A)ln 2 (B)(C)(D)

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