Lab 2 - Experiment 2 The Synthesis and Analysis of Soap...

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Experiment 2: The Synthesis and Analysis of SoapName: Katarina VallegosLab Partners: NoneDate of Experiment: 6/24/2014Course Number: CHE 112-C11
Abstract-By producing soaps from different composition of oils, this experiment will helpto demonstrate the relationship of the fatty acid percents and basic nature of soaps. By creating different soaps this experiment will allow us to physically see changes in appearance, composition as well as test for pH and cleaning properties. Experiment and Observation-The experiment occurred in three phases. The first phase, described as a cold phase, to test four different types of oil. The four oils were canola, corn, coconut and olive oil. To each test tube of oil I added equal amounts of sodium hydroxide and stirred for two different intervals. After the final stirring I was able to test and rank them by firmness. See Data Table 1: Cold Method to see observations and ranking. Data Table 1: ColdMethodCanola OilCorn OilCoconut OilOlive OilTest Tube #1234Initial colorLiquid with a slight yellowish coloring, although still translucent Medium light yellow tint appears translucentClear transparentliquid, similar look to waterClear yellow solution, appearslike cooking oilInitial consistencyOil likeOil likeMore fluid, a little thicker than waterSlightly thicker than waterFirmness after1 minute stirSomewhat thicker than original oil consistencyA little watery feeling but a little resistance in stirringThe solution is starting to thickenRelatively unchanged so farFirmness after 2nd minute stirDoesn’t appear to have changed as much-watery feelMuch Thicker and more firm than canola oil Very thick and can feel that the texture is firmA little more firm that previous stir but not very thickRanking Softest toHardestSoftMedium ThickThickestSlightly ThickDuring the second phase, the hot bath phase, the test tubes were placed into a hot bathand then cooled for an hour. This was enough time for the soap to set and the precipitate to separate from the solution producing the soap. These soaps ranged in a variety of colors and appearances. Recorded observations after five minutes and an hour are shown in Data Table 2: Hot Water Bath Method.
Data Table 2: Hot Water Bath MethodCanola OilCorn OilCoconut OilOliveOilConsistency after5 min in hot waterbathWhite gel like substance settling on top ofsolutionYellow solid at top looks fluid

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