compounds such as: acetanilide‚ acetamide‚ aspirin‚ benzoic acid‚ naphthalene‚ and sucrose‚ for solvents such as: water‚ ethanol‚ benzene‚ and ethyl acetate. Also pure acetanilide is achieved. here are five major steps in the recrystallization process: dissolving the solute in the solvent‚ performing a gravity filtration‚ if necessary‚ obtaining crystals of the solute‚ collecting the solute crystals by vacuum filtration‚ and‚ finally‚ drying the resulting crystals giving us the pure sample of the compound
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acetanilide behind. Experimental: For the separation of sucrose‚ we weighed out 3.048g of Panacetin onto a filter‚ and 50 mL of dichloromethane in a graduated cylinder. Then we transferred both the panacetin and dichloromethane into an Erlenmeyer flask and stirred it until the panacetin was dissolved. We let it dry by gravity and set it aside to dry. The filter paper weighed about 1.320g and sucrose weighed out at 1.028g. Sucrose also ended up on the outside rim of the filter paper. We then
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pharmaceutical preparation of Panacetin‚ by using it ’s solubility along with other organic molecules. We know that Panacetin is made up of sucrose‚ aspirin and some other unknown substance. We know the substance has to be Phenacetin or Acetanilide. To help solidify our reasoning‚ we need a % recovery of 8-12% sucrose‚ 35-45% aspirin and 45-55% unknown. Sucrose for example is insoluble in dichloromethane‚ while aspirin is soluble in CH2Cl2‚ but not in H2O. The organic compound sodium hydroxide will
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by making use of their solubilities and acid-base properties. Panacetin contains aspirin‚ sucrose and an unknown component that may be either acetanilide or phenacetin. Of the three components‚ only sucrose is insoluble in the organic solvent dichloromethane (CH2Cl2 or methylene chloride). The insoluble sucrose can be filtered out if Panacetin is dissolved completely in dichloromethane by gravity filtration or centrifugation leaving the soluble aspirin‚ acetanilide and phenacetin in the solution
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Fermentation of Carbohydrates: Ethanol from Sucrose Objective: To demonstrate a fermentation process‚ isolate the ethanol produced by fractional distillation‚ determine the composition of the ethanol solution recovered‚ and make stoichiometric and yield calculations. Procedures: Fermentation Weigh out 20.0 g of sucrose and place it into a 250-mL Erlenmeyer flask. Add 100 mL of water and gently shake until all the sucrose has dissolved. To this solution add 0.60 g of dipotassium hydrogen phosphate
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“Panacetin” Extraction and Evaporation & Identifying a Constituent of “Panacetin” Recrystallization& Melting-Point Measurement Organic Chemistry Lab Introduction: Panacetin purportedly includes sucrose‚ aspirin‚ and acetaminophen. However‚ the accuracy of Panacetin’s contents has been called into question by the Association for Safe Pharmaceuticals. Therefore‚ the lab must discover the accuracy of the ingredients listed on Panacetin’s label.
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a simulated pharmaceutical preparation Panacetin‚ a proposed type of pain-killer. Panacetin is typically made up of sucrose‚ aspirin‚ and acetaminophen‚ but the third component in this experiment is unknown. The unknown component is suspected to be a chemical relative of acetaminophen‚ either acetanilide or phenacetin. Using techniques such as extraction‚ evaporation‚ and filtration‚ the three components will be isolated based on their solubilities and acid-base properties. The percent composition
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to exchange one ionic environment for another during purification is done by : Dialysis‚ Ultrafiltration and Gel filtration Dialysis-addition of NaOH and HClm PROTEIN STRUCTURES 1. Fibrous –not water soluble: Collagen 2. Globular- mostly water soluble : Globulin‚ Hemoglobin and Albumin-Globular A. Invertase- catalytic protein or enzyme that catalyzes the breakdown of sucrose sugar- mixture of fructose and glucose or inverted sugar syrup -industries and Invertase is usually denied from
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and the resulting weights of the precipitates were 19.32 g. for precipitate 1 and 2.80 g. for precipitate 2. The activity of invertase was ascertained through Benedict’s Test. Test tubes containing either a combination of glucose and fructose or sucrose exhibited an orange coloration—indicative of a weak positive result. Quantification processes for albumin were determined using Warburg-Christian and Bradford Assays. Both method involved spectrophotometry. The resulting protein concentrations in
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Panacetin‚ is originally produced by. Extraction of the chemicals Sucrose‚ Aspirin‚ and an Unknown substance is tested to determine the legitimacy of the label and drug. Theory: The percent composition is calculated for accuracy and to conclude the “label is accurate”. The formula for the percent composition is adding the sums of all the extracts‚ then dividing the total sum by each of the three (3) individual extract; Sucrose‚ Aspirin‚ Unknown. By separating
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