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of the graph followed by highlighting the initial part of the cooling curve where the temperaturedecreased rapidly. Interpolate was then chosen from the analyze menu and the temperature readings displayed in the interpolate box, which was the freezing point of the benzoic aid-lauric acid mixture. Finally, the freezing point was recorded in the data table.Data and Calculations:Mass of lauric acid (g)8.1 gMass of benzoic acid (g)0.9864 gFreezing temperature of pure lauric acid (°C)40.09°CFreezing point of the benzoic acid-lauric acid mixture (°C)39.283°Ct= KfKf= 3.9°C•kg/mol.0.973/3.9 = 0.2495 m/kg0.2495(0.0081) = 0.0020 moles0.9864/(0.0020) = 493.2 g/mol(493.2-122.123/122.123) x (100) = 303.3% Graphs:m
Result:The results obtained are from the data table and graph obtained from this experiment. When doing the experiment it was realized that the temperature decreased when comparing the freezing temperature of the pure lauric acid (40.09°C) to the freezing point of the benzoic acid-lauric acid mixture (39.283°C.) Eight grams of lauric acid and one gram of benzoic acid was weighted out to obtain these results. The auric acid experiment was conducted first and theresults were recorded. The reason that the freezing point of the benzoic acid-lauric acid mixturetemperature decreased is because the mixture was not a pure substance. Discussion:In this experiment, the use of the program Logger Pro, using a Vernier computer interface and temperature probe was conducted. The experiment began by measuring eight grams of lauric acid and placing it into a hot water bath until it reached approximately 85°C and then followed by inserting it into a cool water bath. Following that, once the lauric acid temperature was found, the benzoic and lauric acid were mixed and the freezing point of the mixture was found using Logger Pro.In Part 1 of this experiment, we measured out 4.0 grams of lauric acid, and placed the powder in our test tube which was contained in our beaker. We allowed this to remain until the test tube appeared clear, and then inserted the temperature probe and began data collection for a period of 10 minutes. During these ten minutes, we mixed the lauric acid and stirred it in a gentle up and down motion for the entire duration of data collection. After the data collection
period was complete, we used a hot water bath to melt the lauric acid enough to properly remove the probe. In order to prevent errors in our data, we were instructed to properly wipe