Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (x) D2, Pd/C.
(h)
1208
views
Ch. 9 - Alkenes II: Oxidation and Reduction
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
Chapter 8, Problem 45h(ix)
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (ix) H2, Pd/C;
(h) 
Verified step by step guidance1
Identify the type of reaction: The reaction involves an alkene reacting with H₂ in the presence of a palladium catalyst (Pd/C). This is a catalytic hydrogenation reaction, which reduces the alkene to an alkane by adding hydrogen atoms across the double bond.
Analyze the structure of the alkene: Determine the position of the double bond in the alkene. The double bond is the site where the hydrogen atoms will be added.
Understand the stereochemistry: Catalytic hydrogenation typically occurs via syn addition, meaning both hydrogen atoms are added to the same face of the double bond. This can lead to specific stereochemical outcomes if the alkene is part of a cyclic or chiral structure.
Write the product structure: Replace the double bond in the alkene with single bonds, and add one hydrogen atom to each of the two carbons that were part of the double bond. Ensure the resulting structure is a fully saturated alkane.
Verify the product: Check the final structure to ensure that all valencies are satisfied and that the product is consistent with the reaction conditions (H₂, Pd/C). If the starting alkene is symmetrical, a single product will form; if asymmetrical, consider regioselectivity and stereochemistry.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
2mWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Hydrogenation
Hydrogenation is a chemical reaction that involves the addition of hydrogen (H₂) to an unsaturated compound, typically alkenes or alkynes, converting them into saturated hydrocarbons. This process is facilitated by catalysts such as palladium on carbon (Pd/C), which lowers the activation energy required for the reaction. The result is the formation of alkanes, where double bonds in alkenes are reduced to single bonds.
Recommended video:
Guided course
00:48
The definition of hydrogenation.
Catalysts
Catalysts are substances that increase the rate of a chemical reaction without being consumed in the process. In the context of hydrogenation, palladium on carbon (Pd/C) serves as a catalyst that provides a surface for the reaction to occur, allowing hydrogen to effectively add across the double bond of the alkene. The use of catalysts is crucial in organic reactions to enhance efficiency and selectivity.
Recommended video:
2:10Introduction to Catalysis Concept 1
Alkenes and Their Reactivity
Alkenes are hydrocarbons that contain at least one carbon-carbon double bond, making them more reactive than alkanes. The presence of the double bond allows for various chemical reactions, including addition reactions like hydrogenation. Understanding the structure and reactivity of alkenes is essential for predicting the products of reactions they undergo, such as the formation of alkanes when treated with hydrogen in the presence of a catalyst.
Recommended video:
2:09Alkene Metathesis Concept 1
Related Practice
Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (i) Br2 (ii) Cl2
(f)
689
views
Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (ii) Cl2
(h)
1257
views
Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (i) Br2
(h)
1328
views
Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (vii) 1. mCPBA 2. (viii) 1. O3 2. CH3SCH3
(f)
742
views
Textbook Question
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (v) mCPBA; (vi) 1. OsO4 2. NaHSO3
(f)
891
views