Indicate if the following pairs of structures represe isomers, cis-trans isomers, or the same molecule: CI a. And CL ÇH3 CH3 CH3 %3D and b. CH3 H. H.

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**Transcription for Educational Website:**

---

**Title: Exploring Isomerism in Organic Compounds**

**Instructions:**

Indicate if the following pairs of structures represent structural isomers, cis-trans isomers, or the same molecule:

**Problem a:**

- Two cyclopentene structures with a chlorine (Cl) substituent:
  - First structure: A cyclopentene ring with a chlorine (Cl) substituent at one vertex.
  - Second structure: Identical to the first, suggesting evaluation of potential isomerism.

**Problem b:**

- Two butene structures with different substituents around the double bond:
  1. Structure with the following arrangement:
     - \[
     \begin{array}{c}
     CH_3 \\
     |
     CH - C = C - H \\
     | \\
     CH_3
     \end{array}
     \]

  2. Structure with a different arrangement:
     - \[
     \begin{array}{c}
     C - H \\
     |
     H - C = C - CH_3 \\
     | \\
     CH_3
     \end{array}
     \]

**Further Problem:**

- Determine if the following pairs of structures represent structural isomers or the same molecule:

  - \[
  CH_2 = CH - CH_2 - CH_2 
  \]

  - \[
  CH_3 - CH = CH - CH_3
  \]

**Analysis:**

- For problem 'a', consider geometric or structural factors due to substitutions.
- For problem 'b', analyze the cis-trans configuration around the double bond.
- For the final pair, assess linear structure differences to identify if they are isomers or identical.

**Purpose:**

Through these exercises, students can practice identifying different types of isomers present in organic compounds, focusing on structural and stereochemical variations. These skills are fundamental in understanding chemical properties and reactions of organic molecules.

---
Transcribed Image Text:**Transcription for Educational Website:** --- **Title: Exploring Isomerism in Organic Compounds** **Instructions:** Indicate if the following pairs of structures represent structural isomers, cis-trans isomers, or the same molecule: **Problem a:** - Two cyclopentene structures with a chlorine (Cl) substituent: - First structure: A cyclopentene ring with a chlorine (Cl) substituent at one vertex. - Second structure: Identical to the first, suggesting evaluation of potential isomerism. **Problem b:** - Two butene structures with different substituents around the double bond: 1. Structure with the following arrangement: - \[ \begin{array}{c} CH_3 \\ | CH - C = C - H \\ | \\ CH_3 \end{array} \] 2. Structure with a different arrangement: - \[ \begin{array}{c} C - H \\ | H - C = C - CH_3 \\ | \\ CH_3 \end{array} \] **Further Problem:** - Determine if the following pairs of structures represent structural isomers or the same molecule: - \[ CH_2 = CH - CH_2 - CH_2 \] - \[ CH_3 - CH = CH - CH_3 \] **Analysis:** - For problem 'a', consider geometric or structural factors due to substitutions. - For problem 'b', analyze the cis-trans configuration around the double bond. - For the final pair, assess linear structure differences to identify if they are isomers or identical. **Purpose:** Through these exercises, students can practice identifying different types of isomers present in organic compounds, focusing on structural and stereochemical variations. These skills are fundamental in understanding chemical properties and reactions of organic molecules. ---
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