Chat with AIExam 4: Acids and Bases
Exam 1: Covalent Bonding and Shapes of Molecules115 Questions
Exam 2: Alkanes and Cycloalkanes95 Questions
Exam 3: Stereoisomerism and Chirality93 Questions
Exam 4: Acids and Bases94 Questions
Exam 5: Alkenes: Bonding, Nomenclature, and Properties86 Questions
Exam 6: Reactions of Alkenes98 Questions
Exam 7: Alkynes100 Questions
Exam 8: Haloalkanes, Halogenation, and Radical Reactions76 Questions
Exam 9: Nucleophilic Substitution and Beta-Elimination111 Questions
Exam 10: Alcohols98 Questions
Exam 11: Ethers, Epoxides, and Sulfides93 Questions
Exam 12: Infrared Spectroscopy67 Questions
Exam 13: Nuclear Magnetic Resonance Spectroscopy102 Questions
Exam 14: Mass Spectrometry65 Questions
Exam 15: An Introduction to Organometallic Compounds66 Questions
Exam 16: Aldehydes and Ketones119 Questions
Exam 17: Carboxylic Acids71 Questions
Exam 18: Functional Derivatives of Carboxylic Acids112 Questions
Exam 19: Enolate Anions and Enamines93 Questions
Exam 20: Dienes, Conjugated Systems, and Pericyclic Reactions69 Questions
Exam 21: Benzene and the Concept of Aromaticity85 Questions
Exam 22: Reactions of Benzene and Its Derivatives107 Questions
Exam 23: Amines88 Questions
Exam 24: Catalytic Carbon-Carbon Bond Formation77 Questions
Exam 25: Carbohydrates60 Questions
Exam 26: Lipids54 Questions
Exam 27: Amino Acids and Proteins70 Questions
Exam 28: Nucleic Acids52 Questions
Exam 29: Organic Polymer Chemistry60 Questions
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Provide a brief explanation, based on features of the molecules, for the following trend in pKa values?
CH3CH3 > CH2=CH2 > HCCH
ethane ethene ethyne
(ethylene) (acetylene)
51 44 25
(Essay)
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(37)
(37) Which of the following is present in the highest concentration upon dissolution of H2SO4 in water?
(Multiple Choice)
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(38) Which of the following is a feature of a Brønsted-Lowry base?
(Multiple Choice)
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(39) Which of the following is a feature of a Brønsted-Lowry acid?
(Multiple Choice)
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(48) Which of the following is a definition of the activation energy of a reaction?
(Multiple Choice)
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(42) What is the value of the equilibrium constant for the following equilibrium? 
(Essay)
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(38) Which of the following has a pKa value of approximately 16?
(Multiple Choice)
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(27) Which of the following energy diagrams best represents the changes in energy during addition of HBr to an alkene? 
(Multiple Choice)
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(38) An acid with a low pKa is a strong acid and has a weak conjugate base.
(True/False)
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(37) Which of the following concepts can be used to rationalize the observation that acetic acid is a stronger acid than methanol?
(Multiple Choice)
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(38) Consider the following reaction coordinate diagram. 
This reaction is endergonic.
This reaction is endergonic. (True/False)
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(42) Provide a brief explanation, based on features of the molecules, for the following trend in pKa values?
CH3CH2OH > CF3CH2OH
ethanol 2,2,2-trifluoromethanol
15.9 12.4
(Essay)
4.7/5 (32)
(32) Provide a brief explanation, based on features of the molecules, for the following trend in pKa values?
CH3CH2OH > CH3COOH
15.9 4.76
(Essay)
4.8/5 (33)
(33) 
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