### Organic Chemistry Reaction with Lindlar's Catalyst**Problem Statement**:For the reaction shown, select the expected major organic product.**Reaction Scheme**:A chemical compound with a structure incorporating a triple bond (indicated by ≡) is treated with hydrogen gas (\( H_2 \)) in the presence of Lindlar's catalyst. The goal is to determine the major organic product of this reaction.**Options**:There are five potential products labeled I, II, III, IV, and V.1. **Structure I**: This structure is fully saturated, showing single bonds only.2. **Structure II**: This structure features a double bond (cis configuration) between two of the carbons originally involved in the triple bond.3. **Structure III**: This structure features a double bond (trans configuration) between two of the carbons originally involved in the triple bond.4. **Structure IV**: This structure shows multiple single bonds and a single double bond at a different position.5. **Structure V**: This structure retains some structure of the triple bond but with additional single bonds.**Multiple Choice Answers**:- **A)** Structure I- **B)** Structure II- **C)** Structure III- **D)** Structure IV- **E)** Structure V**Explanation**:When an alkyne (triple bond) reacts with \( H_2 \) in the presence of Lindlar's catalyst, the reaction stops at the cis-alkene stage. This means the correct structure for this reaction should display a cis double bond.**Correct Answer**:**B) Structure II**Structure II is the expected major organic product when an alkyne reacts with \( H_2 \) in the presence of Lindlar's catalyst, as it forms a cis alkene.

Lindlar catalyst: Alkynes can be selectively reduced to an alkene by reaction with hydrogen in…

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For the reaction shown, select the expected major organic product. H2 Lindlar's catalyst %3D IV 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

Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.

Question

### Organic Chemistry Reaction with Lindlar's Catalyst

**Problem Statement**:
For the reaction shown, select the expected major organic product.

**Reaction Scheme**:
A chemical compound with a structure incorporating a triple bond (indicated by ≡) is treated with hydrogen gas (\( H_2 \)) in the presence of Lindlar's catalyst. The goal is to determine the major organic product of this reaction.

**Options**:
There are five potential products labeled I, II, III, IV, and V.

1. **Structure I**: This structure is fully saturated, showing single bonds only.
2. **Structure II**: This structure features a double bond (cis configuration) between two of the carbons originally involved in the triple bond.
3. **Structure III**: This structure features a double bond (trans configuration) between two of the carbons originally involved in the triple bond.
4. **Structure IV**: This structure shows multiple single bonds and a single double bond at a different position.
5. **Structure V**: This structure retains some structure of the triple bond but with additional single bonds.

**Multiple Choice Answers**:
- **A)** Structure I
- **B)** Structure II
- **C)** Structure III
- **D)** Structure IV
- **E)** Structure V

**Explanation**:
When an alkyne (triple bond) reacts with \( H_2 \) in the presence of Lindlar's catalyst, the reaction stops at the cis-alkene stage. This means the correct structure for this reaction should display a cis double bond.

**Correct Answer**:
**B) Structure II**

Structure II is the expected major organic product when an alkyne reacts with \( H_2 \) in the presence of Lindlar's catalyst, as it forms a cis alkene.

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