**Title: Hydrogenation Reaction: Determining the Final Product****Objective:**To identify the final product of a hydrogenation reaction using a palladium catalyst (Pd-C).**Reaction Given:**- Reactant: A molecule with a triple bond (alkyne), specifically a substituted alkyne.- Catalysts: Hydrogen gas (H₂) and palladium on carbon (Pd-C).**Problem Statement:***Select the final product of the following reaction:*The image provides four options as potential products of the reaction:1. **Option A:** A structure with a double bond positioned between a linear chain and a branching chain.2. **Option B:** A completely saturated hydrocarbon (alkane) that lacks any double or triple bonds.3. **Option C:** Another structure with a double bond but with different branching compared to Option A.4. **Option D:** A structure with a Pd (palladium) marker attached, indicating that it may represent an intermediate or part of the catalytic process.**Detailed Explanation:**For the hydrogenation of alkynes:- **Triple Bonds to Single Bonds:** Hydrogenation involves the addition of hydrogen (H₂) across the multiple bonds (double or triple bonds) in the presence of a catalyst. - **Complete Hydrogenation:** In the presence of Pd-C, the reaction generally proceeds to complete hydrogenation, converting all triple and double bonds to single bonds (alkane).Thus, evaluating each option with this knowledge:- **Option A and C:** Show structures with remaining double bonds, indicating partial hydrogenation.- **Option B:** Represents a fully hydrogenated molecule (an alkane) which matches the expectation of complete saturation of bonds.- **Option D:** Shows a molecule with a Pd (palladium) marker, denoting that it might be an intermediate structure and not the final stable product.**Conclusion:**The correct answer is **Option B** since it represents the fully hydrogenated alkane structure, which is the expected end product when an alkyne undergoes complete hydrogenation using H₂ and a Pd-C catalyst.

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Select the final product of the following reaction. H₂, Pd-C w O O Pd

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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Concept explainers

Aromatic Compounds

Aromatic organic compound or aromatic system is an important class of hydrocarbons under the branch of organic chemistry. Aromatic compounds are also called arenas. The definition of aromatic organic compounds can be stated as a class of organic compounds with a planar cyclic ring of atoms bonded through alternated single and double bonds. Due to these alternating bonds, a peculiar feature termed as ‘resonance’, that is, delocalization of pi electrons or the electrons is shared within the atoms of the ring which are present in the aromatic compounds. The word ‘aromatic’ includes a Greek word ‘aroma’ which means smell, indicating that they were named as such due to the sweet odor they produce. Many well-known flavors such as vanilla, cinnamon, and few scents from flowers are extracted from aromatic compounds. Benzene with chemical formula C6H6 is a very common aromatic compound that contains six atoms of carbon held in the cyclic ring of alternate double bonds. It is also to be noted that not all aromatic compounds contain benzene ring. This can be explained by Huckel’s rule.

Question

**Title: Hydrogenation Reaction: Determining the Final Product**

**Objective:**
To identify the final product of a hydrogenation reaction using a palladium catalyst (Pd-C).

**Reaction Given:**
- Reactant: A molecule with a triple bond (alkyne), specifically a substituted alkyne.
- Catalysts: Hydrogen gas (H₂) and palladium on carbon (Pd-C).

**Problem Statement:**
*Select the final product of the following reaction:*

The image provides four options as potential products of the reaction:

1. **Option A:** A structure with a double bond positioned between a linear chain and a branching chain.
2. **Option B:** A completely saturated hydrocarbon (alkane) that lacks any double or triple bonds.
3. **Option C:** Another structure with a double bond but with different branching compared to Option A.
4. **Option D:** A structure with a Pd (palladium) marker attached, indicating that it may represent an intermediate or part of the catalytic process.

**Detailed Explanation:**

For the hydrogenation of alkynes:

- **Triple Bonds to Single Bonds:** Hydrogenation involves the addition of hydrogen (H₂) across the multiple bonds (double or triple bonds) in the presence of a catalyst.
- **Complete Hydrogenation:** In the presence of Pd-C, the reaction generally proceeds to complete hydrogenation, converting all triple and double bonds to single bonds (alkane).

Thus, evaluating each option with this knowledge:

- **Option A and C:** Show structures with remaining double bonds, indicating partial hydrogenation.
- **Option B:** Represents a fully hydrogenated molecule (an alkane) which matches the expectation of complete saturation of bonds.
- **Option D:** Shows a molecule with a Pd (palladium) marker, denoting that it might be an intermediate structure and not the final stable product.

**Conclusion:**

The correct answer is **Option B** since it represents the fully hydrogenated alkane structure, which is the expected end product when an alkyne undergoes complete hydrogenation using H₂ and a Pd-C catalyst.

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