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Chemistry
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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
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Which proton has the lowest pKa, proton A, proton B, and proton C?

The image displays the chemical structure of an unsaturated ketone with various labeled hydrogen atoms. The molecular structure is represented in a skeletal formula, commonly used to simplify organic molecules.

### Explanation of the Structure:

1. **Main Carbon Chain (Backbone):**
   - The backbone consists of a seven-carbon chain.
   - It includes both single and double covalent bonds, with the first five carbons forming single bonds and a double bond between the sixth and seventh carbons.
   
2. **Functional Group:**
   - There is a ketone functional group present on the second carbon atom from the left. It is represented by a carbonyl group (\(C=O\)), where the oxygen is double-bonded to the carbon.

3. **Substituents and Hydrogen Atoms:**
   - A methyl group (\(CH_3\)) is attached to the sixth carbon, represented as branching off from the main chain.
   - Three types of hydrogen atoms are highlighted:
     - \(H_A\) is the hydrogen atom on the third carbon.
     - \(H_B\) is the hydrogen atom on the fourth carbon.
     - \(H_C\) is the hydrogen atom on the fifth carbon.

4. **Notation:**
   - The hydrogen atoms are differentiated by color and subscript letters (A, B, C) to denote their specific environments or relevance in a study or reaction mechanism.

This structural depiction is crucial for understanding the molecular geometry and chemical behavior of the compound in areas such as organic chemistry and related applications.
Transcribed Image Text:The image displays the chemical structure of an unsaturated ketone with various labeled hydrogen atoms. The molecular structure is represented in a skeletal formula, commonly used to simplify organic molecules. ### Explanation of the Structure: 1. **Main Carbon Chain (Backbone):** - The backbone consists of a seven-carbon chain. - It includes both single and double covalent bonds, with the first five carbons forming single bonds and a double bond between the sixth and seventh carbons. 2. **Functional Group:** - There is a ketone functional group present on the second carbon atom from the left. It is represented by a carbonyl group (\(C=O\)), where the oxygen is double-bonded to the carbon. 3. **Substituents and Hydrogen Atoms:** - A methyl group (\(CH_3\)) is attached to the sixth carbon, represented as branching off from the main chain. - Three types of hydrogen atoms are highlighted: - \(H_A\) is the hydrogen atom on the third carbon. - \(H_B\) is the hydrogen atom on the fourth carbon. - \(H_C\) is the hydrogen atom on the fifth carbon. 4. **Notation:** - The hydrogen atoms are differentiated by color and subscript letters (A, B, C) to denote their specific environments or relevance in a study or reaction mechanism. This structural depiction is crucial for understanding the molecular geometry and chemical behavior of the compound in areas such as organic chemistry and related applications.
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