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но stearic acid HO palmitic acid

но stearic acid HO palmitic acid

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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**Question:** 20. Which of the fatty acids below are or is most likely a solid at room temperature? **Molecular Structures:** 1. **Stearic Acid:** - Structure: Saturated fatty acid with no double bonds in its carbon chain. 2. **Palmitic Acid:** - Structure: Saturated fatty acid with no double bonds in its carbon chain. 3. **Oleic Acid:** - Structure: Unsaturated fatty acid with one cis double bond in its carbon chain. 4. **Linoleic Acid:** - Structure: Polyunsaturated fatty acid with two cis double bonds in its carbon chain. 5. **Arachidonic Acid:** - Structure: Polyunsaturated fatty acid with four cis double bonds in its carbon chain. **Options:** a. Stearic acid b. Stearic acid and palmitic acid c. Oleic acid, linoleic acid, and arachidonic acid d. Arachidonic acid e. None of these are solids at room temperature **Explanation:** The diagrams display various fatty acid structures. Saturated fatty acids (like stearic and palmitic) tend to be solid at room temperature due to their straight chains, enabling tight packing. In contrast, unsaturated fatty acids (like oleic, linoleic, and arachidonic) have kinks due to double bonds, preventing tight packing and often making them liquid at room temperature. **Answer:** b. Stearic acid and palmitic acid
Transcribed Image Text:**Question:** 20. Which of the fatty acids below are or is most likely a solid at room temperature? **Molecular Structures:** 1. **Stearic Acid:** - Structure: Saturated fatty acid with no double bonds in its carbon chain. 2. **Palmitic Acid:** - Structure: Saturated fatty acid with no double bonds in its carbon chain. 3. **Oleic Acid:** - Structure: Unsaturated fatty acid with one cis double bond in its carbon chain. 4. **Linoleic Acid:** - Structure: Polyunsaturated fatty acid with two cis double bonds in its carbon chain. 5. **Arachidonic Acid:** - Structure: Polyunsaturated fatty acid with four cis double bonds in its carbon chain. **Options:** a. Stearic acid b. Stearic acid and palmitic acid c. Oleic acid, linoleic acid, and arachidonic acid d. Arachidonic acid e. None of these are solids at room temperature **Explanation:** The diagrams display various fatty acid structures. Saturated fatty acids (like stearic and palmitic) tend to be solid at room temperature due to their straight chains, enabling tight packing. In contrast, unsaturated fatty acids (like oleic, linoleic, and arachidonic) have kinks due to double bonds, preventing tight packing and often making them liquid at room temperature. **Answer:** b. Stearic acid and palmitic acid
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