Classify each reaction as oxidation, reduction, or neither. a.

Organic Chemistry: A Guided Inquiry
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ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter14: Elimination
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**Classifying Reactions as Oxidation, Reduction, or Neither**

Below are a series of chemical reactions. Each reaction should be classified as an oxidation, reduction, or neither. 

**Reaction a:**
- Reactant: A cyclohexanone (a six-membered ring with a ketone group).
- Product: A cyclohexane (a six-membered ring with no additional functional groups).

**Explanation:**
The ketone group (C=O) is removed, and a fully saturated hydrocarbon ring (cyclohexane) is formed. This indicates the addition of hydrogen (reduction), so this reaction is classified as a reduction.

**Reaction b:**
- Reactant: An aliphatic ketone compound (acetic acid).
- Product: A rearranged compound where the ketone group is converted to a more stable form.

**Explanation:**
There's no change in the oxidation state of the carbon atoms involved; thus, this reaction is classified as neither oxidation nor reduction.

**Reaction c:**
- Reactant: Phenylacetylene (a benzene ring with an acetylenic side chain, -C≡CH).
- Product: Phenylacetaldehyde (a benzene ring with an aldehyde side chain, -CH₂CHO).

**Explanation:**
The triple bond (C≡C) is partially reduced to a double bond (C=C) as it forms an aldehyde group. This indicates the addition of hydrogen (reduction), classifying this reaction as a reduction.

**Reaction d:**
- Reactant: A cyclohexene (a six-membered ring with a double bond).
- Product: A cyclohexane with a chlorine substituent.

**Explanation:**
Cyclohexene undergoes addition reaction to form a chlorinated compound, but there's also a loss of the double bond, suggesting an reduction, so this reaction is classified as neither oxidation nor reduction.

Understanding the differences in the nature of these transformations can enhance comprehension of fundamental principles in organic chemistry.
Transcribed Image Text:**Classifying Reactions as Oxidation, Reduction, or Neither** Below are a series of chemical reactions. Each reaction should be classified as an oxidation, reduction, or neither. **Reaction a:** - Reactant: A cyclohexanone (a six-membered ring with a ketone group). - Product: A cyclohexane (a six-membered ring with no additional functional groups). **Explanation:** The ketone group (C=O) is removed, and a fully saturated hydrocarbon ring (cyclohexane) is formed. This indicates the addition of hydrogen (reduction), so this reaction is classified as a reduction. **Reaction b:** - Reactant: An aliphatic ketone compound (acetic acid). - Product: A rearranged compound where the ketone group is converted to a more stable form. **Explanation:** There's no change in the oxidation state of the carbon atoms involved; thus, this reaction is classified as neither oxidation nor reduction. **Reaction c:** - Reactant: Phenylacetylene (a benzene ring with an acetylenic side chain, -C≡CH). - Product: Phenylacetaldehyde (a benzene ring with an aldehyde side chain, -CH₂CHO). **Explanation:** The triple bond (C≡C) is partially reduced to a double bond (C=C) as it forms an aldehyde group. This indicates the addition of hydrogen (reduction), classifying this reaction as a reduction. **Reaction d:** - Reactant: A cyclohexene (a six-membered ring with a double bond). - Product: A cyclohexane with a chlorine substituent. **Explanation:** Cyclohexene undergoes addition reaction to form a chlorinated compound, but there's also a loss of the double bond, suggesting an reduction, so this reaction is classified as neither oxidation nor reduction. Understanding the differences in the nature of these transformations can enhance comprehension of fundamental principles in organic chemistry.
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