112年hce_nchu — 化學

共 50 題 · 含 AI 詳解

#1 Which of the following choices represent(s) a pair of resonance forms? › #2 Which sequence correctly ranks the following protons in order of increasing acid… › #3 Which of the following statements about $\pi$ molecular orbitals is/are correct? › #4 Which of the following compounds is not a constitutional isomer of a compound wi… › #5 Identify the correct IUPAC name for the following structure. › #6 The structures below are › #7 When pyridine is treated with a mixture of nitric and sulfuric acids, the major… › #8 Which sequence of steps below describes the best synthesis of 5-oxohexanoic acid… › #9 What compound is produced when cyclohexene is treated with concentrated $KMnO_4$… › #10 Which of the following represents the highest occupied molecular orbital for the… › #11 What is the major organic product which results when cyclohexene is irradiated i… › #12 Which of the following would not have a C-H stretch at about $3050 cm^{-1}$? › #13 What compound has a significant m/z 70 in its mass spectrum? › #14 The stereochemical configuration of D-Threonine is (2R, 3S). Which of the follow… › #15 Which series of reactions described below, if any, will result in the formation… › #16 Provide the structure of the major product in the reaction below. › #17 Provide the final product of the sequence of steps below? › #18 Which of the structures shown below is consistent with the C-13 NMR (off resonan… › #19 Provide the final product of the sequence of steps below? › #20 Predict the product of the following reaction, including stereochemistry. › #21 Provide the final product of the sequence of steps below? › #22 Provide the final product of the sequence of steps below? › #23 Predict the major product of the following reaction? › #24 Predict the products of the following reaction. › #25 Predict the major product of the following reaction? › #26 What is the point group of BlClF (chlorofluoroiodoborane)? › #27 Consider the calculation: $52.00 + 1.001 - 13.1 + 1.3129 =$ Which of the followi… › #28 Which of the following statements about thermodynamics is/are correct? I. The fi… › #29 Consider the structure of bicarbonate ion $CO_3^{2-}$. Which of the following st… › #30 The naming of chemical compounds, including ions and molecules is important in c… › #31 Calcium is a metal, and sulfur is a nonmetal. They are in a different family of… › #32 The van't Hoff factor ($i$) express the effective concentration of particles for… › #33 The orbital wavefunction for the state ($n =3, l = 1,$ and $m_l= 0$) of the hydr… › #34 Redox reaction includes oxidation and reduction simultaneously. Balance the foll… › #35 How many types of oxidation numbers are for the hydrogen atom in the following c… › #36 Which statement of the following about hydrogen bonding is not true? › #37 According to the solubility rules, how many of the following spices should be so… › #38 Construct a table of Crystal Field Stabilization Energy (CFSE) for all $d^n$ ele… › #39 Reactions of a series of substituted pyridines with $BF_3$ shows the order of Le… › #40 Consider the following reactions, which one of the following will have the small… › #41 Regarding the "Quantum Mechanics and Atomic Structure", which one of the followi… › #42 Which one of the following statements is incorrect for "Kinetics"? › #43 Pick the correct molecular structure(s) as predicted by the VSEPR theory? › #44 Pick the correct one from the following statements about the electrochemical cel… › #45 When pure water ($pH = 7$ at $25 ^\circ C$) is heated, it will induce: › #46 Which of the following statements about the $^1H$ NMR (Nuclear Magnetic Resonanc… › #47 Which of the following compounds does not exhibit an optical isomer? (en: $NH_2CH_2CH_2NH_2$… › #48 Which of the following statements is incorrect regarding molecules of an ideal g… › #49 The proposed mechanism for the reaction of $H_2O_2 + 2H^+ + 2I^- \rightarrow I_2 + 2H_2O$… › #50 Determine the pH of a buffered solution containing 0.15 M $NH_3$ ($K_b = 1.8 \times 10^{-5}$… ›