Textbook Question
Provide an arrow-pushing mechanism for the following hypothetical base half-reactions.
(b)
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Ch. 4 - Acids and Bases: Electron Flow
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471
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Table of contents
- Ch. 2 - General Chemistry Translated: Finding the Electrons114
- Ch. 3 - Alkanes and Cycloalkanes: Properties and Conformational Analysis109
- Ch. 4 - Acids and Bases: Electron Flow144
- Ch. 5 - Chemical Reaction Analysis: Thermodynamics and Kinetics118
- Ch. 6 - Stereoisomerism: Arrangement of Atoms in Space112
- Ch. 7 - Principles of Green (Organic) Chemistry3
- Ch. 8 - Alkenes I: Properties and Electrophilic Additions158
- Ch. 9 - Alkenes II: Oxidation and Reduction150
- Ch. 10 - Alkynes: Electrophilic Addition and Redox Reactions101
- Ch. 11 - Properties and Synthesis of Alkyl Halides: Radical Reactions108
- Ch. 12 - Substitution and Elimination: Reactions of Haloalkanes172
- Ch. 13 - Alcohols, Ethers and Related Compounds: Substitution and Elimination239
- Ch. 14 - Structural Identification I: Infrared Spectroscopy and Mass Spectrometry54
- Ch. 15 - Structural Identification II: Nuclear Magnetic Resonance Spectroscopy93
- Ch. 16 - Metals in Organic Chemistry48
- Ch. 17 - Carbonyl Addition Reactions: Aldehydes and Ketones45
- Ch. 18 - Nucleophilic Acyl Substitution I: Carboxylic Acids18
- Ch. 19 - Nucleophilic Acyl Substitution II: Carboxylic Acid Derivatives39
- Ch. 20 - Enolates: Carbonyl Addition and Substitution13
- Ch. 21 - Conjugated Systems I: Stability and Addition Reactions56
- Ch. 22 - Conjugated Systems II: Pericyclic Reactions54
- Ch. 23 - Benzene I: Aromatic Stability and Substitution Reactions64
- Ch. 24 - Benzene II: Reactions Influenced by the Aromatic Ring62
- Ch. 25 - Amines: Structure, Reactions, and Synthesis27
- Ch. 26 - Amino Acids, Proteins, and Peptide Synthesis9
- Ch. 27 - Carbohydrates, Nucleic Acids, and Lipids54
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471Not the one you use?Change textbook
Chapter 3, Problem 18c
Provide an arrow-pushing mechanism for the following acid–base reactions.
(c) 
Verified step by step guidance1
Identify the acid and base in the reaction. The acid is the species donating a proton (H⁺), and the base is the species accepting the proton.
Draw the Lewis structures of the acid and base to clearly show the lone pairs and bonds involved in the reaction.
Use curved arrows to represent the movement of electrons. Start the arrow at the lone pair of the base (nucleophile) and point it toward the hydrogen atom of the acid.
Show the bond between the hydrogen and the acid breaking. Use a curved arrow starting from the bond and pointing toward the atom that will retain the electrons after the bond breaks (usually the conjugate base of the acid).
Draw the products of the reaction, including the conjugate acid (formed by the base after gaining a proton) and the conjugate base (formed by the acid after losing a proton). Ensure all charges and lone pairs are correctly assigned.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Acid-Base Theory
Acid-base theory explains the behavior of acids and bases in chemical reactions. According to the Brønsted-Lowry theory, acids are proton donors while bases are proton acceptors. Understanding this concept is crucial for predicting the direction of acid-base reactions and identifying the reactants and products involved.
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02:49
The Lewis definition of acids and bases.
Arrow-Pushing Mechanism
The arrow-pushing mechanism is a visual representation used to illustrate the movement of electrons during chemical reactions. In acid-base reactions, arrows indicate the transfer of protons and the flow of electron pairs, helping to clarify how reactants transform into products. Mastery of this technique is essential for accurately depicting reaction pathways.
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04:32General Mechanism
Reaction Intermediates
Reaction intermediates are transient species formed during the conversion of reactants to products in a chemical reaction. In acid-base reactions, intermediates can include protonated or deprotonated species that play a critical role in the reaction mechanism. Recognizing these intermediates aids in understanding the overall process and predicting the stability of the final products.
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04:31Stability of Conjugated Intermediates
Related Practice
Textbook Question
Acid–base reactions are reversible. Show a mechanism for the reverse of the reactions in Assessment 4.18.
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Textbook Question
Provide an arrow-pushing mechanism for the following acid–base reactions.
(d)
1672
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Textbook Question
Provide an arrow-pushing mechanism for the following hypothetical acid half-reactions. [These are only intended to help you learn about arrow pushing in acid–base reactions.]
(b)
1589
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Textbook Question
In the following reactions,
(iv) provide an arrow-pushing mechanism of the proton transfer that will occur, and
(v) predict the product of the reactions. [You'll need to provide the lone pairs here.]
(a)
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Textbook Question
Provide an arrow-pushing mechanism for the following hypothetical base half-reactions.
(c)
1169
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