Determine for each of the following pairs of molecules whether they are identical, constitutional isomers, or stereoisomers. OH II and OH and -OH OH OH OH and OH www CI and CI OH

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Chapter1: Chemical Foundations
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**Title:** Understanding Molecular Isomerism

**Objective:**
Examine each pair of molecules and determine if they are identical, constitutional isomers, or stereoisomers.

**Molecule Pairs:**

1. **Pair 1:**
   - Structure: Two cyclic hexane rings with hydroxyl (OH) groups attached.
   - Both structures are shown as chair conformations with differing orientations of the OH groups.

2. **Pair 2:**
   - Structure: Two cyclohexane molecules with two hydroxyl (OH) groups. 
   - The positions of the OH groups differ on the cyclohexane ring.

3. **Pair 3:**
   - Structure: Two linear chains with identical carbon skeletons, differing only in the placement of substituents.
   - Both structures depict a similar shape with variances in branching.

4. **Pair 4:**
   - Structure: Two similar linear carbon chains with chlorine (Cl) atoms.
   - The Cl atoms are depicted in different stereochemical orientations (dashed and solid wedges indicate stereochemistry).

**Instructions:**
- Evaluate each pair carefully.
- Consider the connectivity of atoms for constitutional isomers.
- Assess stereochemistry and spatial arrangement for stereoisomers.
- Utilize molecular models if necessary for visualization.

This exercise aids in recognizing different types of isomerism in organic chemistry.
Transcribed Image Text:**Title:** Understanding Molecular Isomerism **Objective:** Examine each pair of molecules and determine if they are identical, constitutional isomers, or stereoisomers. **Molecule Pairs:** 1. **Pair 1:** - Structure: Two cyclic hexane rings with hydroxyl (OH) groups attached. - Both structures are shown as chair conformations with differing orientations of the OH groups. 2. **Pair 2:** - Structure: Two cyclohexane molecules with two hydroxyl (OH) groups. - The positions of the OH groups differ on the cyclohexane ring. 3. **Pair 3:** - Structure: Two linear chains with identical carbon skeletons, differing only in the placement of substituents. - Both structures depict a similar shape with variances in branching. 4. **Pair 4:** - Structure: Two similar linear carbon chains with chlorine (Cl) atoms. - The Cl atoms are depicted in different stereochemical orientations (dashed and solid wedges indicate stereochemistry). **Instructions:** - Evaluate each pair carefully. - Consider the connectivity of atoms for constitutional isomers. - Assess stereochemistry and spatial arrangement for stereoisomers. - Utilize molecular models if necessary for visualization. This exercise aids in recognizing different types of isomerism in organic chemistry.
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