Domanda del libro di testo
Without using pKa values, pick out the least reactive (most stable) base in each pair. Explain your answer.
(c)
1011
views
Ch. 4 - Acids and Bases/Electron Flow
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- 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 1: Properties and Electrophilic Additions158
- Ch. 9 - Alkenes 2: 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 1: Infrared Spectroscopy and Mass Spectrometry54
- Ch. 15 - Structural Identification 2: Nuclear Magnetic Resonance Spectroscopy93
- Ch. 16 - Metals in Organic Chemistry48
- Ch. 17 - Carbonyl Addition Reactions: Aldehydes and Ketones45
- Ch. 18 - Nucleophilic Acyl Substitution 1: Carboxylic Acids18
- Ch. 19 - Nucleophilic Acyl Substitution 2: Carboxylic Acid Derivatives39
- Ch. 20 - Enolates: Carbonyl Addition and Substitution13
- Ch. 21 - Conjugated Systems 1: Stability and Addition Reactions56
- Ch. 22 - Conjugated Systems 2: Pericyclic Reactions54
- Ch. 23 - Benzene 1: Aromatic Stability and Substitution Reactions64
- Ch. 24 - Benzene 2: 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: 9780137566471Non è quello che usi tu?Cambia libro di testo
Capitolo 3, Problema 44a
Without using pKa values, pick out the least reactive (most stable) base in each pair. Explain your answer.
(a) 
Guida verificata passo dopo passo1
Step 1: Understand the concept of base stability. A stable base is less reactive and has a lower tendency to accept protons. Stability is influenced by factors such as resonance, electronegativity, hybridization, and inductive effects.
Step 2: Analyze resonance effects. If a base can delocalize its negative charge through resonance, it will be more stable. Compare the resonance structures of the bases in the pair to determine which one has better charge delocalization.
Step 3: Consider electronegativity. A more electronegative atom holding the negative charge will stabilize the base better. Compare the atoms bearing the negative charge in each base to assess their electronegativity.
Step 4: Evaluate hybridization. A negative charge on an atom with sp hybridization is more stable than on an atom with sp² or sp³ hybridization due to the higher s-character. Check the hybridization of the atoms holding the negative charge in each base.
Step 5: Examine inductive effects. Electron-withdrawing groups near the negatively charged atom can stabilize the base by pulling electron density away. Compare the substituents or groups attached to the bases to determine their influence on stability.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
3mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Acidity and Basicity
Acidity and basicity are fundamental concepts in organic chemistry that describe the tendency of a substance to donate protons (acids) or accept protons (bases). The strength of a base is often related to its stability; a more stable base is less likely to react with protons. Understanding the relative stability of bases helps in predicting their reactivity in chemical reactions.
Video consigliato:
06:21
Understanding the difference between basicity and nucleophilicity.
Resonance Stabilization
Resonance stabilization occurs when a molecule can be represented by multiple valid Lewis structures, leading to a delocalization of electrons. This delocalization lowers the energy of the molecule, making it more stable. In the context of bases, those that can delocalize their negative charge through resonance are typically more stable and, therefore, less reactive.
Video consigliato:
03:43The radical stability trend.
Inductive Effect
The inductive effect refers to the electron-withdrawing or electron-donating effects transmitted through sigma bonds in a molecule. Electronegative atoms or groups can stabilize a negative charge on a base by pulling electron density away, thus reducing its reactivity. Understanding the inductive effect is crucial for evaluating the stability of bases in comparison to one another.
Video consigliato:
01:47Understanding the Inductive Effect.
Pratica correlata
Domanda del libro di testo
Without using pKa values, pick out the more reactive (least stable) base in each pair. Explain your answer.
(a)
1036
views
Domanda del libro di testo
Which anion in each pair would you expect to react more quickly with H+?
(a)
1057
views
Domanda del libro di testo
Without using pKa values, pick out the more acidic compound in each pair. Explain your answer.
(a)
1196
views
Domanda del libro di testo
Without using pKa values, pick out the least reactive (most stable) base in each pair. Explain your answer.
(b)
993
views
Domanda del libro di testo
For the bases shown, draw the conjugate acid and identify a pKa value from Table 4.5 that would help you accurately estimate its stability.
(e)
1320
views