### Understanding Hydrocarbon Reactions with CatalystsFor the reaction shown, select the expected major organic product.#### Reaction and Conditions:A hydrocarbon with a triple bond (an alkyne) undergoes hydrogenation in the presence of a platinum (Pt) catalyst.**Reactants:**- Hydrogen gas (H₂)- Platinum (Pt) catalyst- Triple-bonded hydrocarbon (alkyne)**Question:**Which of the following structures is the correct major product of the reaction?#### Answer Choices:- **A. Compound I:** Depicts a fully saturated hydrocarbon (no double or triple bonds).- **B. Compound II:** Illustrates a hydrocarbon with a single double bond (cis configuration).- **C. Compound III:** Shows a hydrocarbon with a single double bond (trans configuration).- **D. Compound IV:** Displays a hydrocarbon with no double or triple bonds.- **E. Compound V:** Represents the original compound with a triple bond retained.#### Answer Options Detail:- If the alkyne were to be fully hydrogenated in excess H₂, it would become an alkane. This would be represented by options A (I) or D (IV). Both I and IV show fully saturated hydrocarbons.- If the alkyne were to be selectively hydrogenated to an alkene, the product would retain a double bond. This could result in either a cis (Z) or trans (E) configuration, represented by options B (II) or C (III).- If no reaction were to occur, the structure would remain as shown in option E (V).#### Conclusion:During hydrogenation in the presence of a platinum catalyst, the triple bond in the alkyne is typically fully reduced to a single bond, resulting in a completely saturated hydrocarbon.The expected major organic product, therefore, aligns with option **A (I)**.

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Answered: For the reaction shown, seledt the…

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For the reaction shown, seledt the expected major organic product. H2 Pt II IV V.

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

Reactions of Ethers

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Epoxides

Epoxides are a special class of cyclic ethers which are an important functional group in organic chemistry and generate reactive centers due to their unusual high reactivity. Due to their high reactivity, epoxides are considered to be toxic and mutagenic.

Williamson Ether Synthesis

An organic reaction in which an organohalide and a deprotonated alcohol forms ether is known as Williamson ether synthesis. Alexander Williamson developed the Williamson ether synthesis in 1850. The formation of ether in this synthesis is an SN2 reaction.

Question

### Understanding Hydrocarbon Reactions with Catalysts

For the reaction shown, select the expected major organic product.

#### Reaction and Conditions:
A hydrocarbon with a triple bond (an alkyne) undergoes hydrogenation in the presence of a platinum (Pt) catalyst.

**Reactants:**
- Hydrogen gas (H₂)
- Platinum (Pt) catalyst
- Triple-bonded hydrocarbon (alkyne)

**Question:**
Which of the following structures is the correct major product of the reaction?

#### Answer Choices:
- **A. Compound I:** Depicts a fully saturated hydrocarbon (no double or triple bonds).
- **B. Compound II:** Illustrates a hydrocarbon with a single double bond (cis configuration).
- **C. Compound III:** Shows a hydrocarbon with a single double bond (trans configuration).
- **D. Compound IV:** Displays a hydrocarbon with no double or triple bonds.
- **E. Compound V:** Represents the original compound with a triple bond retained.

#### Answer Options Detail:
- If the alkyne were to be fully hydrogenated in excess H₂, it would become an alkane. This would be represented by options A (I) or D (IV). Both I and IV show fully saturated hydrocarbons.
- If the alkyne were to be selectively hydrogenated to an alkene, the product would retain a double bond. This could result in either a cis (Z) or trans (E) configuration, represented by options B (II) or C (III).
- If no reaction were to occur, the structure would remain as shown in option E (V).

#### Conclusion:
During hydrogenation in the presence of a platinum catalyst, the triple bond in the alkyne is typically fully reduced to a single bond, resulting in a completely saturated hydrocarbon.

The expected major organic product, therefore, aligns with option **A (I)**.

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