CHE 102 lab #7 .docx - Experiment#7 Making Soap...

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Experiment #7: Making Soap: Base-Catalyzed Hydrolysis of aTriglycerideZoe Monteforte CHE 102 L-06 Jasie Mathew3/27/17
Abstract: The objectives for these experiments were to prepare soap through a saponification reaction, compare the soap produced with a soap made from a different oil, test the emulsifying properties of the soap, and observe the result of adding soap in hard or acidic water. The soap was also kept in a control test tube and its pH level was tested. The soap produced by grapeseed oil did not work so instead the experiment was performed with another groups soap made from walnut oil. A comparison of soaps made from different oils was conducted. Walnut oil was used to produce soap and in doing so, a buttery yellow like substance was formed. The soap made from the walnut oil was compared to soaps made from coconut oil and sunflower oil. The coconut oil produce a lot of soap with a solid white appearance. The sunflower oil produced a gooey yellow soap. The emulsifying properties of the soap produced from walnut oil were tested by adding it to a mineral oil and water solution. The soap allowed the water and oil to mix, making the solution soluble. The same soap was then added to four different test tubes. The first test tube contained CaCl2and tap water. The second testtube contained MgCl2and tap water. The third test tube contained FeCl3and tap water. The fourth test tube contained tap water. Adding soap to the first test tube produced a white and cloudy solution with a precipitate. Adding soap to the second test tube produced a white and cloudy solution. Adding soap to the third test tube produced a light orange solution. Lastly, adding soap to the water created a clear solution. The pH level of the soap made from walnut oil was 9. Background:A carboxylic acid group with an extended carbon chain that contains double bonds is known to be called a fatty carboxylic acid. If the compound only contains single bonds, it is known to be a saturated fatty acid. If the compound contains one or more double bonds, it is known to be an unsaturated fatty acid.

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