41. What are the relative integrations for the 1H NMR signals for the following compound?
(A)3:1:2:2
(B)3:3:2
(C) 3:1:4
(D)5:3

42. If a molecule contains 4 elements of unsaturation and signals in the 1H NMR spectrum between δ 7.0 and 8.0 ppm, what structural group is likely to be present? (A)a carbonyl group (B)an aromatic ring (C) a hydroxyl group(D)a cyclohexyl ring

43. Using a 60 MHz spectrometer, the protons in dichloromethane appear at 5.30 ppm. When the same sample is placed in a 100 MHz instrument, where does the signal appear? (A)8.33 (B)5.30 (C) 3.18(D)cannot be determined from information given

44. Which of the following is another name for cyclobutadiene? (A)[2]annulene (B)[4]annulene (C) [6]annulene(D)Dewar benzene

45. In electrophilic aromatic substitution reactions a bromine substituent ________. (A)is a deactivator and a m-director (B)is a deactivator and an o,p-director (C) is an activator and a m-director(D)is an activator and an o,p-director

46. Which element is oxidized in the reaction below?Fe(CO)5 (l) + 2HI (g) → Fe(CO)4I2 (s) + CO (g) + H2 (g) (A)C (B)O (C) H(D)Fe

47. Which of the following reactions is a redox reaction?(a) K2CrO4 + BaCl2 → BaCrO4 + 2KCl(b) Pb22+ + 2Br- → PbBr(c) Cu + S → CuS (A)(a) only (B)(b) only (C) (c) only(D)(a) and (c)

48. The purpose of the salt bridge in an electrochemical cell is to ________. (A)maintain electrical neutrality in the half-cells via migration of ions (B)provide a source of ions to react at the anode and cathode (C) provide oxygen to facilitate oxidation at the anode (D) provide a means for electrons to travel from the anode to the cathode

49. Consider an electrochemical cell based on the reaction:2H+ (aq) + Sn (s) → Sn2+ (aq) + H2 (g) Which of the following actions would not change the measured cell potential? (A)lowering the pH in the cathode compartment (B)addition of more tin metal to the anode compartment (C) increasing the tin (II) ion concentration in the anode compartment (D) increasing the pressure of hydrogen gas in the cathode compartment

50. What is the cathode in an alkaline battery? (A)MnO2 (B)KOH (C) Zn powder(D)Mn2O3

51. The standard cell potential ( ) for the reaction below is +0.63 V. At 25 °C, the cell potential for this reaction is ________ V when [Zn2+ ] = 3.0 M and [Pb2+ ] =2.0✖10-4M.Pb2+(aq) + Zn (s) → Zn2+(aq) + Pb (s) (A)0.51 (B)0.86 (C) 0.40(D)0.75

114年 - [非官方正解]114 亞洲大學_學士後獸醫學系招生試題：化學(含普通化學、有機化學)#131168

113年 - [非官方正解]113 中國醫藥大學_學士班寒假轉學招生考試：普通化學#124976

113年 - [非官方正解]113 亞洲大學_學士後獸醫學系招生考試試題：化學科#123227

112年 - 112 中國醫藥大學_學士班寒假轉學招生考試試題：普通化學#118600

112年 - [非官方正解]112 亞洲大學學士後獸醫學系招生考試試題_學士後獸醫學系：化學(含普通化學、有機化學)#117879

111年 - 111 中國醫藥大學學士班寒假轉學招生考試：普通化學#112961

111年 - 111 國立清華大學學士後西醫學系單獨招生考試_學士後醫學系自然科學組：化學#110532

111年 - 111 國立中興大學_學士後醫學系試題_學士後醫學系甲、乙組：化學#107632

111年 - 111 學士後醫學系招生考試：物理及化學#107629

110年 - 110 中國醫藥大學_學士班寒假轉學考試：普通化學#105829