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QUESTION 14 has three pi bonds. О 2-Нехуne O Chlorobenzene O 1-Ethyl-cyclohexene 1,3-butadiene O Pentanoic acid

QUESTION 14 has three pi bonds. О 2-Нехуne O Chlorobenzene O 1-Ethyl-cyclohexene 1,3-butadiene O Pentanoic acid

Chemistry
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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### Question 14 **__________ has three pi bonds.** - [ ] 2-Hexyne - [ ] Chlorobenzene - [ ] 1-Ethyl-cyclohexene - [ ] 1,3-butadiene - [ ] Pentanoic acid **Instructions:** Select the correct compound from the list that has three pi bonds. ### Explanation In organic chemistry, pi bonds (π bonds) are a type of covalent bond formed by the sideways overlap of atomic orbitals. They are present in double and triple bonds between atoms. Identifying the number of pi bonds in a molecule involves analyzing the bonding and structure of the compounds provided. ### Analysis of Options: 1. **2-Hexyne:** This compound has a triple bond, which consists of one sigma bond and two pi bonds. 2. **Chlorobenzene:** In this aromatic compound, each double bond contributes one pi bond, with the benzene ring having a total of three pi bonds. 3. **1-Ethyl-cyclohexene:** This contains one double bond, hence only one pi bond. 4. **1,3-Butadiene:** This compound has two double bonds, yielding two pi bonds in total. 5. **Pentanoic acid:** This compound has no pi bonds in its structure. ### Solution: Chlorobenzene is the correct answer as it is an aromatic compound with three double bonds, thus containing three pi bonds.
Transcribed Image Text:### Question 14 **__________ has three pi bonds.** - [ ] 2-Hexyne - [ ] Chlorobenzene - [ ] 1-Ethyl-cyclohexene - [ ] 1,3-butadiene - [ ] Pentanoic acid **Instructions:** Select the correct compound from the list that has three pi bonds. ### Explanation In organic chemistry, pi bonds (π bonds) are a type of covalent bond formed by the sideways overlap of atomic orbitals. They are present in double and triple bonds between atoms. Identifying the number of pi bonds in a molecule involves analyzing the bonding and structure of the compounds provided. ### Analysis of Options: 1. **2-Hexyne:** This compound has a triple bond, which consists of one sigma bond and two pi bonds. 2. **Chlorobenzene:** In this aromatic compound, each double bond contributes one pi bond, with the benzene ring having a total of three pi bonds. 3. **1-Ethyl-cyclohexene:** This contains one double bond, hence only one pi bond. 4. **1,3-Butadiene:** This compound has two double bonds, yielding two pi bonds in total. 5. **Pentanoic acid:** This compound has no pi bonds in its structure. ### Solution: Chlorobenzene is the correct answer as it is an aromatic compound with three double bonds, thus containing three pi bonds.
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