A H₂ Pd/C B с D

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Predict the major organic product of the reaction shown below.

Which compound shown in Question #1 would be the major organic product if the Pd/C was replaced with Lindlar's catalyst?

The image presents a catalytic hydrogenation reaction scenario. The initial reactant is a molecule with both a double bond and a triple bond. The reaction conditions specified are the presence of hydrogen gas (H₂) and a palladium on carbon (Pd/C) catalyst. The question mark indicates that the product of this reaction needs to be identified among the options labeled A, B, C, and D.

**Molecular Structures:**

1. **Reactant:**
   - The reactant is a linear molecule with a double bond (alkene) and a triple bond (alkyne).

2. **Products:**
   - **Option A:** A molecule with only a double bond, indicating incomplete hydrogenation of the triple bond.
   - **Option B:** A molecule with a double bond at a different position.
   - **Option C:** A molecule with a double bond at a different position.
   - **Option D:** A fully saturated alkane, indicating complete hydrogenation of both the double and triple bonds.

**Explanation:**
Under the specified conditions (H₂ and Pd/C), complete hydrogenation is likely, which will convert both the double and triple bonds into single bonds, resulting in a fully saturated hydrocarbon. Therefore, Option D is the expected product of this reaction.
Transcribed Image Text:The image presents a catalytic hydrogenation reaction scenario. The initial reactant is a molecule with both a double bond and a triple bond. The reaction conditions specified are the presence of hydrogen gas (H₂) and a palladium on carbon (Pd/C) catalyst. The question mark indicates that the product of this reaction needs to be identified among the options labeled A, B, C, and D. **Molecular Structures:** 1. **Reactant:** - The reactant is a linear molecule with a double bond (alkene) and a triple bond (alkyne). 2. **Products:** - **Option A:** A molecule with only a double bond, indicating incomplete hydrogenation of the triple bond. - **Option B:** A molecule with a double bond at a different position. - **Option C:** A molecule with a double bond at a different position. - **Option D:** A fully saturated alkane, indicating complete hydrogenation of both the double and triple bonds. **Explanation:** Under the specified conditions (H₂ and Pd/C), complete hydrogenation is likely, which will convert both the double and triple bonds into single bonds, resulting in a fully saturated hydrocarbon. Therefore, Option D is the expected product of this reaction.
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