Textbook Question
Provide an arrow-pushing mechanism for the following hypothetical base half-reactions.
(b)
1
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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 15c
Based on the one species that is identified for you, label the remaining molecules as acid, base, conjugate acid, or conjugate base.
(c) 
Verified step by step guidance1
Step 1: Identify the species labeled as 'Conjugate Acid' in the image. The molecule with the carbonyl group (C=O) and a hydrogen attached to the alpha carbon is labeled as the conjugate acid.
Step 2: Analyze the reactants. The molecule with the negatively charged nitrogen (NH⁻) is a base because it can accept a proton.
Step 3: Examine the products. The molecule with the negatively charged oxygen (O⁻) is the conjugate base, as it results from the conjugate acid losing a proton.
Step 4: Identify the second product. The molecule with the neutral amine group (H₂N) is the conjugate acid of the base, as it results from the base gaining a proton.
Step 5: Summarize the labels: The reactants are 'Conjugate Acid' and 'Base,' while the products are 'Conjugate Base' and 'Conjugate Acid.' This follows the Bronsted-Lowry acid-base theory.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Acids and Bases
In organic chemistry, acids are substances that can donate a proton (H+) to another substance, while bases are substances that can accept a proton. This concept is fundamental to understanding acid-base reactions, where the transfer of protons leads to the formation of conjugate acids and bases.
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02:49
The Lewis definition of acids and bases.
Conjugate Acid and Conjugate Base
A conjugate acid is formed when a base accepts a proton, while a conjugate base is formed when an acid donates a proton. This relationship is crucial in acid-base chemistry, as it helps to identify the species involved in a reaction and predict the direction of equilibrium.
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03:27Conjugated states
Equilibrium in Acid-Base Reactions
Acid-base reactions often reach a state of equilibrium, where the rates of the forward and reverse reactions are equal. Understanding this concept allows chemists to predict the favored direction of a reaction based on the strengths of the acids and bases involved, which is essential for labeling the species correctly in the given reaction.
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04:00Determining Acid/Base Equilibrium
Related Practice
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)
1
views
Textbook Question
Based on the one species that is identified for you, label the remaining molecules as acid, base, conjugate acid, or conjugate base.
(a)
3
views
Textbook Question
Based on the one species that is identified for you, label the remaining molecules as acid, base, conjugate acid, or conjugate base.
(b)
3
views
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.]
(a)
Textbook Question
Using the convention that the acid and base are on the left side of the chemical equation, label the acid, base, conjugate acid, and conjugate base in the following reactions.
(c)