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mixture is refluxed for at least 45 minutes and added to a salt solution mixture. Once the mixtures have been combined, they are set in an ice bath until a precipitate forms and then vacuum filtration is used to separate the product from the excess. Procedure: AttachedObservations: Attached Saponification of Fat Questions: Attached Conclusion: Attached
Conclusion: For this experiment, 2.5 mL of deionized water is added to 2.5 mL of 95% ethanol along with 0.715 g of sodium hydroxide and ~ 1 mL of corn oil. The reflux of the mixture startedat 12:25 PM. While the solution is refluxing, a mixture of 3.994 g of sodium chloride and 10 mL of water is created in a 30 mL beaker. The beaker was warmed for several minutes on the sand bath to try and dissolve the remaining sodium chloride present. ~ 2 mL of extra water was added to completely dissolve the salt. Reflux ended at 1:14 PM. Once salt water mixture cooled to room temperature it was placed in an ice bath where the hot solution was added. Once cooled and product formed, vacuum filtration was used to separate the liquid from the product. However, the amount of solid product that formed was very little. Instead what was present was more of a liquid soap solution. This may have been from adding the extra water to the salt solution in order to get it to dissolve. Therefore, a neighbor’s product was used for the tests with the soap. She also used corn oil to make her product. Test 1:Since residual bases have the possibility of being harmful to skin or to clothing, it is necessary totest the soap produced for any residual bases. Phenolphthalein is used to determine this because it is an acid-base indicator. If the pH of a substance is below 8.0, the solution will remain colorless. From pH 8.0, the solution produces a deep red hue above a pH of 10.0.