Pre Lab #2.docx - Briana Bing Pre-Lab#2 Part 1 Title...

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Briana Bing September 24, 2018 Pre-Lab #2 Part 1: Title: Predicting the Solubility of Sugar, Vitamin C and lauric acid in water and hexane. Objective: Determining whether each solute will dissolve into each solvent. Hypothesis: Both sugar and vitamin C should dissolve into water, but not into hexane because they are polar. The polarity of sugar and vitamin C are due to the higher levels of carbon-oxygen and carbon hydrogen. Lauric acid is nonpolar, making it more likely to dissolve into hexane but not water. Lauric acid is composed of carbon-hydrogen bonds and carbon-carbon bonds, so the result of the compound should be nonpolar. Variables: The independent variables in the experiment are going to be the different mixtures of solute and solvent. Also, the total amount that was used. The dependent variable is going to be the solubility because it is the factor being changed. Experimental Outline: - Prepare six properly labeled test tubes, half with one inch of water and the other half with one inch of hexane. - Measure out two very small amounts of sugar, vitamin C and lauric acid. Pour each compound into one sample test tube of water and hexane. - Use a stirring rod to stir each of the solutions. - If the solute dissolves into the solution it is soluble, if it doesn’t then it is insoluble. Chemical Hazards and Waste: Make sure that gloves, goggles, and a lab coat are worn during the full duration of the experiment. Hexane is very flammable, so make sure that there are no open flames and it must be handled with a fume hood. The solutions with water should go into the aqueous waste container.
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