Concept explainers
Interpretation:
Which fatty acid out of behenic acid and erucic acid has a higher melting point is to be determined.
Concept introduction:
Melting point of a compound depends on the strength of the intermolecular interactions between its molecules. The stronger the interactions, higher the melting point.
The type and strength of the intermolecular interactions depends on the
When a molecule contains both polar and nonpolar groups, the relative strength of induced dipole-induced dipole interactions in the nonpolar part and the dipole-dipole interactions in the polar part depend on the length of the nonpolar part. If the nonpolar part consists of a long chain hydrocarbon, the induced dipole-induced dipole interactions can be stronger than the dipole-dipole interactions due to the polar part. The larger the interacting surface area, the stronger the induced dipole-induced dipole interactions. Long hydrocarbon chains have a large number of electrons, which increases the polarizability.
The surface area also depends on whether the chain is straight or branched or folded. If the number of carbon atoms is the same, a straight chain has the largest surface area, while a branched or folded chain has a relatively low surface area over which it can interact with other molecules. So straight chain compounds have stronger induced dipole-induced dipole interactions, and therefore, higher melting points than branched or folded chain compounds with the same number of carbon atoms.
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Chapter 4 Solutions
EBK GET READY FOR ORGANIC CHEMISTRY
- Please draw a molecule that has the six functional groups Aldehyde, Ester, Ketone, Acid Chloride, Tertirary Amide, and Alcohol. Please label each functional grouparrow_forwardFats belong to the class of organic compounds represented by the general formula, RCOOR', where R and R' represent hydrocarbon groups. What is the name of the functional group present in fats? What functional group is common to all saponifiable lipids?arrow_forwardFatty acids are carboxylic acids that have long hydrocarbon chains attached to a carboxylate group. How does a saturated fatty acid differ from an unsaturated fatty acid? How are they similar?arrow_forward
- Propane, CH3CH2CH3, is a gas at room temperature, whereas propanol, CH3CH2CH2OH, is a liquid. Why the difference?arrow_forwardFrom Figure 18.7, arrange the following substances in order of increasing percentage of unsaturated fatty acids: chicken fat, beef fat, corn oil, butter, and sunflower oil.arrow_forwardThe compound decane is a straight-chain alkane. Predict the following: a.Is decane a solid, liquid, or gas at room temperature? b.Is it soluble in water? c.Is it soluble in hexane? d.Is it more or less dense than water?arrow_forward
- The n-butyl anion can be formed from When the CLi bond is broken so that both electrons remain with the carbon atom, the result is +Li+arrow_forwardDraw the structural formula of trichloroethene, a metal degreaser that was once used to decaffeinate coffee. Why isn't the IUPAC name for this substance 1, 1, 2-trichloroethene?arrow_forwardWhat a carboxylic acid is called?arrow_forward
- Chemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStaxChemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage Learning
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781938168390/9781938168390_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305960060/9781305960060_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780618974122/9780618974122_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780534420123/9780534420123_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781133951889/9781133951889_smallCoverImage.gif)