filtered using a Buchner or Hirsch funnel and was washed with three small portions of cold water. The crystals were allowed to air dry for several minutes while suction continued to eliminate excess water. The crude product was recrystallized from ethyl acetate. The dried crystals were weighed and a melting point was obtained. Results: Table 1: Experimental Data Table Initial Mass of Vanillin | 0.3843 g | Final Mass of Vanillyl Alcohol | 0.2467 g | Melting Point Range of Vanillyl Alcohol |
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vacuum filtration‚ crystals will be held on a filtration paper while the liquid portion of reagents will drained into an Erlenmeyer flask. To purify our crystals even more‚ we will have to perform a procedure called re-crystallization‚ using ethyl acetate as our solvent instead of water in order to prevent decomposition of our products‚ and then once again we will use vacuum filtration to separate the crystals from the solvent. After we have finished with the experiment‚ we will be testing for
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meantime‚ a dark green layer was seen attached to the top of the upper sea sand layer‚ which meant that there were pigments with higher polarity in the extract that did not dissolve substantially in hexane. Upon the addition of 10 mL of hexane: ethyl acetate (1:1)‚ a green solution was immediately formed above the sand level. As this solution entered the column‚ three colour bands were formed. The lowest was green‚ and the second lowest was yellow. However‚ these two bands were very close together
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converting sugar to acids‚ gases and/or alcohol using yeast or bacteria. In its strictest sense‚ fermentation is the absence of the electron transport chain and takes a reduced carbon source‚ such as glucose‚ and makes products like lactic acid or acetate. Fermentation is also used much more broadly to refer to the bulk growth of microorganisms on a growth medium. The science of fermentation is known as zymology. The process is often used to produce wine and beer‚ but fermentation is also employed
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2014-2015 Distillation of Gin Solis‚ Ferguie B.*‚ Sto. Domingo‚ Hannah Beatrix‚ Sy‚ Kurt A. 2 BS Chemistry‚ College of Science‚ University of Sto. Thomas España‚ Manila‚ Philippines‚ 1008 Abstract Distillation is the separation of a mixture into its component due to the difference in boiling point. In this experiment the group made use of Gin manufactured by Ginebra San Miguel as a test sample for two different techniques of distillation. The techniques used were simple distillation and fractional distillation
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Introduction In this lab‚ caproic acid was synthesized in a multi-step process that involved the synthesis of three intermediates – diethyl n-butylmalonate‚ potassium n-butylmalonate‚ and n-butyl malonic acid respectively. An IR was used to characterize the starting material‚ n-bromobutane‚ and the first intermediate‚ diethyl n-butylmalonate; while IR and NMR were used to characterize the final product‚ caproic acid. Reactions‚ Mechanism and Theory Caproic acid a.k.a n-hexanoic acid is a carboxylic
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------------------------------------------------- How to make own Sodium Acetate ------------------------------------------------- 1. Add 6 tablespoons of baking soda to a pot. Do not use baking powder. 2. Add 2 liters of white vinegar to the baking soda until it stops fizzing. Do this bit by bit to avoid spills and stir often. When the fizzing stops‚ the reaction is complete‚ leaving you a diluted solution of sodium acetate. The solution should be clear. 3. Boil the solution until around
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Synthesis and Isolation of Expectorant Guaifenesin By: Ben DuBose Dr. Cossey 3361L Abstract The purpose of this experiment was to isolate and synthesize Guaifenesin. Isolation was performed with the use of two Guai-Aid Tablets‚ each of which contained 400mg of pure Guaifenesin. Reflux‚ a technique used to heat a mixture without evaporating the solution‚ was used to synthesize Guaifenesin through a Williamson Ether Synthesis reaction with an SN2 mechanism. Introduction
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available in Middle Eastern countries‚ West Africa‚ the Americas‚ and Russia (University of Delaware‚ 2004). It is pumped from the ground and brought to oil refineries to produce finished petroleum products. Oil refining may start up as simple distillation but production of higher valued products requires additional sophisticated processes and equipment. Oil price is primarily driven by the rising global demand and political instability in several oil producing countries (www.thepriceoffuel.com
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diabetics. A qualitative analysis of the chemical compound of the essential oil obtained from the Stevia leaves identified 88 compounds‚ with the majority being mono- and sesquiterpenes. There is a presence of fatty acids and sterols when the ethyl acetate extracts were analyzed. Not only is Stevia used to sweeten foods and beverages but it also is used to treat diabetes‚ lower high blood pressure‚ used as a weight loss aid‚ lowers uric acid levels‚ and prevents heartburn. Stevia increases the strength
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