115年hce_nchu — 化學

共 50 題 · 含 AI 詳解

#1 What is the bond order of the carbon-carbon bonds in benzene? › #2 1-Methylcyclopentanol is classified as ________. › #3 The Hofmann elimination proceeds via a(n) ________ pathway. › #4 Which of the following yields a primary alcohol upon reduction? › #5 The following two reactions are important in the blast furnace production of iro… › #6 Esters and amides are most easily made by nucleophilic acyl substitution reactio… › #7 Which of the following is also an acceptable name for 3-nitrophenol? › #8 Consider the fermentation reaction of glucose:… › #9 Which of the following solvents could be described as polar and protic? › #10 In which of the following compounds does N have its maximum oxidation state? › #11 The RNA backbone is linked through a phosphate group. What type of bonding occur… › #12 How many peaks appear in the proton spin decoupled $^{13}\text{C}$ NMR spectrum… › #13 UV spectroscopy measures the energy required to promote an electron from the ___… › #14 When pent-1-ene is treated with mercury(II) acetate in methanol and the resultin… › #15 Provide an acceptable name for the compound below. › #16 How would you perform the following transformation? › #17 What is the best way to perform the transformation shown below? › #18 Which of the following molecules has a characteristic stretch at $3300\text{ cm}^{-1}$… › #19 What type of carbon environment does not generate a signal in the DEPT-90 spectr… › #20 An NMR spectrometer that operates at a frequency of $60\text{ MHz}$ for $^{13}\text{C}$… › #21 If a mixture contains 75\% of one compound and 25\% of its enantiomer, what is t… › #22 Consider the constitutional isomers 2-methylbut-1-ene, 2-methylbut-2-ene, and 3-… › #23 How many elements of unsaturation are implied by the molecular formula $\text{C}_8\text{H}_{11}\text{N}$… › #24 Which of the following terms best describes the stereochemical relationship of t… › #25 Which line-angle formula corresponds to the chair conformation shown below? › #26 Predict the major organic product from the following reaction. › #27 Show how you would perform the following synthesis. › #28 Identify the correct name for the following structure. › #29 Which of the following structures is aromatic? › #30 Acid chlorides can be prepared from carboxylic acids by treatment with ________. › #31 By what mechanism does cyclohexanol react when treated in sulfuric acid and what… › #32 Which of the following is transition metal? › #33 What is the major organic product that results when 1-heptyne is treated with 2… › #34 Provide the reagents necessary to complete the following transformation. › #35 Which of the following additions to alkenes occur(s) specifically in an _syn_ fa… › #36 What is the correct name for the structure of coordination number 6? › #37 Which of the following has the highest melting temperature? › #38 What is the oxidation number of manganese in $\text{K}_4[\text{Mn(CN)}_6]$? › #39 Which of the following metal ions has a $\text{d}^8$ electron configuration? › #40 Which of the following is polar molecule? › #41 Using the following data reactions:… › #42 What type of structure does the $\text{XeOF}_2$ molecule have? › #43 How many electrons are involved in $\pi$ bonding in benzene, $\text{C}_6\text{H}_6$… › #44 An element with the electron configuration $[\text{Xe}] 6\text{s}^24\text{f}^{14}5\text{d}^7$… › #45 For the reaction… › #46 The calibration points for the linear Reaumur scale are the usual melting point… › #47 Relative abundance is the unit along the y-axis in a mass spectrum. What are the… › #48 Consider the reaction $3\text{A} + \text{B} + \text{C} \rightarrow \text{D} + \text{E}$… › #49 The relationship between 1 and 2 is: ________. › #50 The relationship between 1 and 2 is: ________. ›