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Mayonnaise is an emulsion made from oil, water and egg yolks. What type of molecule is likely present in egg yolk to allow the oil and water to mix?

Mayonnaise is an emulsion made from oil, water and egg yolks. What type of molecule is likely present in egg yolk to allow the oil and water to mix?

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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3. Mayonnaise is an emulsion made from oil, water and egg yolks. What type of molecule is likely present in egg yolk to allow the oil and water to mix? 4. What do you think happens to the glycerol in the soap making experiment? 5. In earlier centuries soap was made by mixing animal fat with ashes (from campfires) If you tested the pH of a mixture of ashes and water do you think it would be acidic or basic? 6. Hopefully most of the excess sodium hydroxide (NaOH) was removed from your soap during the filtration step because a soap that contains too much base is harmful to the skin and hair, silk, or wool. A good soap dissolved in water has a pH of between 7 and 9.. What method that we used earlier in this class could have been used to check the pH of soapy water made from the soap you synthesized? How would you have done the measurement? 33
Transcribed Image Text:3. Mayonnaise is an emulsion made from oil, water and egg yolks. What type of molecule is likely present in egg yolk to allow the oil and water to mix? 4. What do you think happens to the glycerol in the soap making experiment? 5. In earlier centuries soap was made by mixing animal fat with ashes (from campfires) If you tested the pH of a mixture of ashes and water do you think it would be acidic or basic? 6. Hopefully most of the excess sodium hydroxide (NaOH) was removed from your soap during the filtration step because a soap that contains too much base is harmful to the skin and hair, silk, or wool. A good soap dissolved in water has a pH of between 7 and 9.. What method that we used earlier in this class could have been used to check the pH of soapy water made from the soap you synthesized? How would you have done the measurement? 33
Table 1. Emulsion Formation Emulsion has formed (Yes or No) NO es 1. From the results in Table 1, can you say that the soap is an emulsifying agent, a substance able to cause nonpolar and polar substances to mix? How did you reach your conclusion? Fron Sample Water Water plus oil Water plus oil plus soap Hydrophilic head LAB WORKSHEET- Experiment 11 Ester Hydrolysis and Soap Making Na 0. No. of Layers Cloudy or Clear Clear Clear cloudy 2 2 water is t 2. The products of the saponification reaction you performed were fatty acid sodium salts and glycerol. Shown below is a long chain fatty acid sodium salt. The molecule is amphiphilic because it has a polar end (hydrophilic head) and a nonpolar portion (hydrophobic tail). HO Hydrophobic tail is able a) What part of the molecule interacts with water? Polar bond interacts w/water CH3 b) Which part of the molecule interacts with a nonpolar substance like grease? nonpolar interacts w/ grease 32
Transcribed Image Text:Table 1. Emulsion Formation Emulsion has formed (Yes or No) NO es 1. From the results in Table 1, can you say that the soap is an emulsifying agent, a substance able to cause nonpolar and polar substances to mix? How did you reach your conclusion? Fron Sample Water Water plus oil Water plus oil plus soap Hydrophilic head LAB WORKSHEET- Experiment 11 Ester Hydrolysis and Soap Making Na 0. No. of Layers Cloudy or Clear Clear Clear cloudy 2 2 water is t 2. The products of the saponification reaction you performed were fatty acid sodium salts and glycerol. Shown below is a long chain fatty acid sodium salt. The molecule is amphiphilic because it has a polar end (hydrophilic head) and a nonpolar portion (hydrophobic tail). HO Hydrophobic tail is able a) What part of the molecule interacts with water? Polar bond interacts w/water CH3 b) Which part of the molecule interacts with a nonpolar substance like grease? nonpolar interacts w/ grease 32
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