Chem Lab Report Ex. #7.docx - Experiment#7 Making Soap...

This preview shows page 1 - 3 out of 5 pages.

Experiment #7Making Soap: Base-Catalyzed Hydrolysis of a TriglycerideMarch 29, 2017Abstract
The purpose of this experiment is to perform a saponification reaction to prepare a simplesoap from vegetable oil. You will test the emulsifying properties of the soap and investigate whathappens to soap in hard or acidic water. The properties of the prepared soap will be studies and comparisons will be made between the soaps produced from different types of oils. My lab partner and I used avocado oil to create our soap. The primary fatty acid is oleic acid. When our soap was created, it was a green/brown color. It was a good emulsifier because when my lab partner and I added oil to the solution and then mixed it, it seemed to be well mixed within each other instead of a fine separated layer. When hard minerals (Ca+2and Mg+2) and acidic minerals (Fe+3) were added to our soap it was insoluble. BackgroundA fatty carboxylic acid contains a carboxylic acid group with a long carbon chain. If the fatty acid has a single bond then it is a saturated fatty acid. If it contains double bonds then it is an unsaturated fatty acid. A triglyceride is an ester derived from glycerol and three fatty acids. There can be many depending on the type of oil. Triglycerides are the main component in vegetable oils. In humans, triglycerides are a mechanism for storing unused calories, and their high concentration in blood correlates with the consumptions of starchy and other carbohydrate foods. During this experiment, a process called saponification will be used. A triglyceride in vegetable oil will be broken down to the three ester bonds. The ester will decompose when it is

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture