Post lab Questions -soap Preparation Define: Triglyceride, saponification, surfa
ID: 514873 • Letter: P
Question
Post lab Questions -soap Preparation Define: Triglyceride, saponification, surfactant and micelle. 2. Draw the structure and discuss the properties of a Micelle. 3. olive oil has a saponification value of 190 mg KoH per gram. This means that it takes 190 mg of KOH ao react completely with 1 gram of olive oil. a. What is the mole ratio for the reaction of a triglyceride with ROH? esee eguation b. Divide 0.190g of KOR b7y its molar mass to calculate the number of moles ofROR that will react with l gram of olive oil. c. Use the answers to (a) and b) to determine the number of moles oorresponding to gram of olive oil. Divide l gram by this number of moles to caloulate the average molar mass g mole) of olive oil. Explain why most soaps contain glycerol and describe the properties that glyeerol adds o Draw the general structure of a triglyceride containing both saturated and unsaturated fatty acids. Circle and label the glycerol backbone, an ester functional group, and unsaturated fatty acid residue.Explanation / Answer
Tryglyceride: it is an ester derived from glycerol and three fatty acids. These three fatty acids combined with a molecule of the alcohol glycerol. They also present in the blood to enable the bidirectional transference of adipose fat and blood glucose from the liver, and are a major component in human skin oils.
In the human body, high levels of tryglycerides in the blood stream have been linked to atherosclerosis and by extension, the risk of heart stroke .
Saphonification: It is the alkaline hydrolysis of fatty acid ester. These undergo hydrolysis.
This is catalysed by the strong acid or base. this is alkaline hydrolysis of fatty acid ester.
The chemical reaction of any fat and sodium hydroxide is a saphonication.
Surfactant : The lower the surface tension between two liquids or between a liquid and a solid.
Surfactant act as a detergents, wetting agents,foaming agents,emulsifiers and dispersants.
Surfactant also called the surface-active agent. They are used to disperse aqueous suspensions of insoluble dyes and perfumes.
Micelle : It is an aggregate of surfactant molecules dispersed in a liquid colloid
In aqueous solution, molecules having both polar or charged groups and nonpolar regions form aggregates called micelles.
Micelle aggregates forms only when the concentration of the amphiphilic molecule reaches a given concentration of the amphiphilic molecule reaches a given concentration called critical micelle concentration.