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Increasing boiling point

Increasing boiling point

Chemistry
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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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### Exercise: Arranging Molecules by Boiling Point In this activity, you will arrange the molecules in order of increasing boiling point. The task involves analyzing the molecular structures and comparing their intermolecular forces. #### Molecular Structures 1. **First Molecule**: Linear structure with two carbon atoms (C) double-bonded to each other, each with two hydrogen atoms (H) bound to them. 2. **Second Molecule**: Straight-chain hydrocarbon with three carbon atoms in a row, fully saturated with hydrogen atoms. 3. **Third Molecule**: Straight-chain hydrocarbon with four carbon atoms, all saturated with hydrogen atoms. 4. **Fourth Molecule**: Contains a short carbon chain with a methyl group branching from the second carbon and fully saturated with hydrogen atoms. #### Objective - **Arrange** the molecules in the blanks provided, indicating their relative boiling points using the symbols "<". #### Explanation The boiling point of a molecule generally increases with: - **Molecular Weight**: Heavier molecules typically have higher boiling points. - **Intermolecular Forces**: Molecules with stronger intermolecular forces (e.g., hydrogen bonding, dipole-dipole interactions) will have higher boiling points. The arrow at the bottom represents the increasing boiling point from left to right. #### Interactive Step: - **Drag and Drop**: Move the molecular images into the correct order, starting from the molecule with the lowest boiling point to the highest based on the criteria above. #### Reset Option - Use the **Reset** button if you need to start over. This exercise will strengthen your understanding of how molecular structure affects physical properties like boiling point.
Transcribed Image Text:### Exercise: Arranging Molecules by Boiling Point In this activity, you will arrange the molecules in order of increasing boiling point. The task involves analyzing the molecular structures and comparing their intermolecular forces. #### Molecular Structures 1. **First Molecule**: Linear structure with two carbon atoms (C) double-bonded to each other, each with two hydrogen atoms (H) bound to them. 2. **Second Molecule**: Straight-chain hydrocarbon with three carbon atoms in a row, fully saturated with hydrogen atoms. 3. **Third Molecule**: Straight-chain hydrocarbon with four carbon atoms, all saturated with hydrogen atoms. 4. **Fourth Molecule**: Contains a short carbon chain with a methyl group branching from the second carbon and fully saturated with hydrogen atoms. #### Objective - **Arrange** the molecules in the blanks provided, indicating their relative boiling points using the symbols "<". #### Explanation The boiling point of a molecule generally increases with: - **Molecular Weight**: Heavier molecules typically have higher boiling points. - **Intermolecular Forces**: Molecules with stronger intermolecular forces (e.g., hydrogen bonding, dipole-dipole interactions) will have higher boiling points. The arrow at the bottom represents the increasing boiling point from left to right. #### Interactive Step: - **Drag and Drop**: Move the molecular images into the correct order, starting from the molecule with the lowest boiling point to the highest based on the criteria above. #### Reset Option - Use the **Reset** button if you need to start over. This exercise will strengthen your understanding of how molecular structure affects physical properties like boiling point.
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Presence of hydrogen bonding in a molecule increases its boiling point.

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