4. Read Section 1.12 on IMF and physical properties in the Klein text. (Alternately, review the linked information on Canvas.) a) Draw line structures for the following constitutional isomers: 3,3-dimethylhexane; octane; 2,2,3-trimethylpentane; 3-ethylhexane b) Rank them in order of increasing boiling points (1 = lowest bp. 4 = highest bp). c) Rank them in order of increasing AH combustion (1= smallest, least negative AH, 4 = largest, most negative AH). Circle the molecule that is the most stable.

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
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**Title: Understanding Constitutional Isomers and Their Properties**

**Objective:**
Analyze and compare the physical properties of given constitutional isomers by drawing their structures and ranking them based on boiling points and heat of combustion.

**Instructions:**

1. **Pre-reading:**
   - Review Section 1.12 on intermolecular forces (IMF) and physical properties in the Klein textbook.
   - Alternatively, consult the linked information provided on Canvas.

2. **Task Overview:**
   - Draw the line structures for the following constitutional isomers:
     - 3,3-Dimethylhexane
     - Octane
     - 2,2,3-Trimethylpentane
     - 3-Ethylhexane

3. **Ranking Exercises:**
   - **Boiling Points:**
     - Rank the isomers in order of increasing boiling points (1 = lowest boiling point, 4 = highest boiling point).
   - **Heat of Combustion (ΔH_combustion):**
     - Rank the isomers based on increasing heat of combustion (1 = smallest/least negative ΔH, 4 = largest/most negative ΔH).
     - Identify and circle the molecule that is the most stable.

This exercise will help students understand how structural variations in isomers influence their physical properties.
Transcribed Image Text:**Title: Understanding Constitutional Isomers and Their Properties** **Objective:** Analyze and compare the physical properties of given constitutional isomers by drawing their structures and ranking them based on boiling points and heat of combustion. **Instructions:** 1. **Pre-reading:** - Review Section 1.12 on intermolecular forces (IMF) and physical properties in the Klein textbook. - Alternatively, consult the linked information provided on Canvas. 2. **Task Overview:** - Draw the line structures for the following constitutional isomers: - 3,3-Dimethylhexane - Octane - 2,2,3-Trimethylpentane - 3-Ethylhexane 3. **Ranking Exercises:** - **Boiling Points:** - Rank the isomers in order of increasing boiling points (1 = lowest boiling point, 4 = highest boiling point). - **Heat of Combustion (ΔH_combustion):** - Rank the isomers based on increasing heat of combustion (1 = smallest/least negative ΔH, 4 = largest/most negative ΔH). - Identify and circle the molecule that is the most stable. This exercise will help students understand how structural variations in isomers influence their physical properties.
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