Textbook Question
For the following acid–base reaction, (a) identify the acid and conjugate acid
Ch. 5 - Chemical Reaction Analysis: Thermodynamics and Kinetics
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471
Not the one you use?Change textbookSelect a different textbook
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
All textbooks
Mullins 1st EditionCh. 5 - Chemical Reaction Analysis: Thermodynamics and KineticsProblem 20c
Mullins 1st EditionCh. 5 - Chemical Reaction Analysis: Thermodynamics and KineticsProblem 20cChapter 4, Problem 20c
Draw a reaction coordinate diagram for a one step reaction that has the following values of Ea and ∆H. (c) Ea = 5 kcal/mol; ∆H° = 0 kcal/mol
Verified step by step guidance1
Understand the reaction coordinate diagram: It is a graphical representation of the energy changes during a chemical reaction. The x-axis represents the reaction progress, and the y-axis represents the potential energy.
Identify the given values: The activation energy (Eₐ) is 5 kcal/mol, which represents the energy barrier that must be overcome for the reaction to proceed. The enthalpy change (∆H°) is 0 kcal/mol, indicating that the reaction is thermoneutral (the energy of the reactants and products is the same).
Sketch the diagram: Start by drawing the x-axis (reaction progress) and y-axis (potential energy). Place the reactants and products at the same energy level since ∆H° = 0 kcal/mol.
Add the energy barrier: Draw a peak between the reactants and products to represent the activation energy (Eₐ). The height of the peak above the reactants corresponds to 5 kcal/mol. Label this peak as the transition state.
Label the diagram: Clearly mark the reactants, products, transition state, Eₐ (activation energy), and ∆H° (enthalpy change). Ensure the diagram visually reflects the given values and the one-step nature of the reaction.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
1mWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Reaction Coordinate Diagram
A reaction coordinate diagram is a graphical representation that illustrates the energy changes during a chemical reaction. The x-axis typically represents the progress of the reaction, while the y-axis shows the energy of the system. It highlights the transition state, reactants, and products, allowing for visual analysis of energy barriers and thermodynamic properties.
Recommended video:
Guided course
05:02
Coordination Complexes
Activation Energy (Eₐ)
Activation energy (Eₐ) is the minimum energy required for a chemical reaction to occur. It represents the energy barrier that must be overcome for reactants to transform into products. In the context of the given values, an Eₐ of 5 kcal/mol indicates a relatively low energy barrier, suggesting that the reaction can proceed at a reasonable rate under standard conditions.
Recommended video:
Guided course
06:07Introduction to free energy diagrams.
Enthalpy Change (∆H°)
Enthalpy change (∆H°) refers to the difference in energy between the reactants and products of a reaction at standard conditions. A ∆H° of 0 kcal/mol indicates that the reaction is thermoneutral, meaning that the energy of the products is equal to that of the reactants. This implies that there is no net energy release or absorption during the reaction, which is important for understanding the overall energy profile.
Recommended video:
Guided course
04:38Calculating Enthalpies
Related Practice
Textbook Question
For the following acid–base reaction, (b) calculate the equilibrium constant.
1
views
Textbook Question
Draw a reaction coordinate diagram for a one step reaction that has the following values of Ea and ∆H. (a) Ea = 9 kcal/mol ; ∆H° = + 4 kcal/mol
6
views
Textbook Question
Draw a reaction coordinate diagram for a one step reaction that has the following values of Ea and ∆H. (b) Ea = 2 kcal/mol ; ∆H° = -17 kcal/mol
2
views
Textbook Question
For the following acid–base reaction, (c) calculate the ratio of butan-2-ol to 2-butoxide.
1
views
Textbook Question
If the following reaction is favorable, what can we say about the sign of ∆H°? Explain your answer.
2
views