資訊推薦

• 37. 下列哪些互為同分異構物？ (A) (B)乙醇和乙醚 (C)葡萄糖和半乳糖 (D)乙酸乙酯和正丁酸 (E) 。
• 10. Alkene chemistry is dominated by what type of reaction?(A) substitution (B) clectrophilic additi
• 11. Which of the following alkenes exhibit E-Z isomerism? I . 1-chloropropene II. 2-chloropropene II
• 25. 若實數 x, y 滿足3x-2y=20，則x2+4y2的最小值為？(A) 20 (B) 30 (C) 40 (D) 50
• 26. 下列哪個選項的 a 值讓 x+ay= 3和ax+9y=9的圖形沒有共同點？(A) 6 (B) 3 (C) −3 (D) −6
• 12. Which of the following ions are aromatic species? (A) I and III (B) II and IIl(C) II and IV (D)
• 13. Rank the following compounds in order of decreasing reactivity to aromatic electrophilic bromina
• 27. 坐標空間中有兩平面x+2y+2z=3以及6x+3y-2z=7，若這兩平面的銳夾角為θ ，則cosθ的值為？(A) (B) (C) (D)
• 38. 有關二氧化鈦奈米光觸媒的敘述，下列哪些正確? (A)二氧化鈦奈米光觸媒被紅外光照射後，可引發一連串的氧化還原反應 (B)二氧化鈦光觸媒若發揮功效，可使週遭的水分子產生氫氧自由基 (C)二氧化鈦
• 7. 請比較 三物質的鍵長與鍵能，以下所述何者正確？(A) 鍵長最長 (B) 鍵長最長(C) 鍵長最長 (D) 鍵能最大
• 7. The function f satisfies the equation Evaluate f(π/3). (A) 6.196 (B) 2 (C) 3.098 (D) 4 (E) 3.055*
• 14. Where would the compound shown below undergo bromination with Br2/FeBr3? (A) ortho/para position
• 39. 當 反應達平衡時，做下列選項中的改變，則對系統所造成影響的敘述，哪些正確?(A)加入水，則平衡向左移動(B)加入與原溶液等體積的水，則 增加(C)加入 FeCl3(s)使其溶解，則[SCN－]
• 8. The function g(x) is the derivative of . What is the derivative of theinverse of g(x) at x = 3?(A
• 15. In the Friedel-Crafts alkylation of benzene, dialkylation is often a significant by-product.In t
• 16. What is the IUPAC name of the following compound? (A) 3-bromo-2-methylcyclohexene(B) 1-bromo-2-
• 9.當 存在其值為一3。請問下列哪個選項是正確的?(A)a=0(B)a?=9(C)a=-3(D)a=3(E)以上皆非。
• 17. In the SN2 reaction, the "2" stands for (A) two reactants in the reaction. (B) two ste
• 18. Which of the following reacts the fastest by theSN2 mechanism?(A) CH3Br (B) CH3；CH2Br (C) (CH3)2
• 19. Identify the mechanistic pathways, respectively, for the products in the following reaction.(A)
• 40. 當定溫下某一已經平衡的反應系統中，加入催化劑，會改變下面哪幾項? (A)平衡常數 (B)正反應速率(C)逆反應速率 (D)產率(E)反應所需的低限能 。
• 20. Which one of the following compounds cannot undergo an E2 reaction?(A) 1-bromo-2,3-dimethylbutan
• 21. Which of the following sets of conditions most favors the E1 mechanism?(A) when the alkyI halide
• 22. Which of the following cannot be made by the reduction of a ketone or aldehyde withNaBH, in meth
• 23. As a reducing agent, NaBH4 donates a________to a ketone or aldehyde.(A) proton (B) hydrogen atom