and Recrystallization of Aspirin Preparation and Recrystallization of Aspirin Date of the experiment: 9 May 2013 Date of submission: 23 May 2012 Date of the experiment: 9 May 2013 Date of submission: 23 May 2012 Synopsis 1. General Objective: To familiarize with the preparation of some simple organic compound and purify the compound by recrystallization. Specific Objective: The experiment is carried out to: 1.1 Conduct the synthesis of aspirin 1.2 Reinforce the
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For this lab‚ 40.2 mL of canola oil were used as the initial volume for the production of synthesized biodiesel. Through the synthesis process‚ 31.307 grams of canola biodiesel was produced‚ which is a percentage yield of 85.714%. In order to get this percentage yield‚ the following calculations were made: 40.2 mL canola oil × 0.9073 g1 mL=36.5 g × 1 mol376.6 g=0.0416 moles canola oil From the prelab‚ for every 1 mole of oil‚ 3 moles of biodiesel are produced. 0.0416 mol oil × 3 mol biodiesel1
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assignment‚ you will dissolve a sample of NaCl in water and then measure the boiling point elevation for the solution. 1. Start Virtual ChemLab and select Boiling Point Elevation from the list of assignments. The lab will open in the Calorimetry laboratory with a calorimeter on the lab bench and a sample of sodium chloride (NaCl) on the balance. 2. Record the mass of the sodium chloride in the data table. If it is too small to read‚ click on the Balance area to zoom in‚ record the reading
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Post-Lab Report for Experiment 2: Cooperative Identification of an organic Solid October 6‚ 2013 Introduction: This experiment was focused on the cooperative identification of organic compound by its chemical properties such as: slow melting point‚ mixed melting point‚ Rf values in TLC experiment‚ IR spectrum analysis‚ and H NMR spectra. Such data can provide the the identity of functional groups and the identity of the compound itself. In this experiment
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original state and the percent of the hydrate recovered was calculated by using the mass of the rehydrated sample by the mass of the original hydrate and then multiplied by 100%. Data Presentation & Analysis Table 1: The data was collected from the lab experiment. Sample calculations are shown. Mass of beaker with sample 30.765g Mass of empty beaker 30.263g Mass of sample .502g Mass of beaker with sample after 1st heat 30.661g Mass of beaker with sample after 2nd heat 30.657g Heating mass
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IR ATR spectra of the solid complex was acquired along with a solution cell IR of the complex in methylene chloride. According to the lab manual used for this experiment two characteristic carbonyl IR stretches of MesMo(CO)3 occur strongly around 2000 cm-1. The stretches at 1940 and 1855 cm-1 in the IR ATR spectra are possible indicators of carbonyl stretches in the compound that was
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to synthesise pure aspirin using chemical tests such as esterification and recrystallization independently and to also find out the melting point range of aspirin using melting point determination. INTRODUCTION Aspirin‚ which is also known as acetylsalicylic acid‚ is one of the commonly used and widely found in any drugstore or pharmacy. Its properties make aspirin a well-rounded drug that reduces inflammation and fever and also relieves pain. The active ingredient in aspirin was found to be salicylic
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Name: Aaron Banks Section: Thursday PRELAB: A MODEL FOR CIRCUITS I: ELECTRIC CURRENT 1. What do you predict for the rankings of the brightness of bulbs A‚ B‚ and C in Figure 2-1? A>B>C A being the brightest 2. How do you predict that changing the direction of the current by reversing the connections to the battery in Figure 2-1 would change the rankings in (1)? I don’t think it will change at all. The brightness should be the same in diagram b and diagram a it should also stay
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CHEM%2315%Fall%2014% Creating useful and beautiful molecules using synthetic organic chemistry – Synthesis of Aspirin and Indigo INTRODUCTION Aspirin Salicylic acid occurs naturally in the bark of willow trees. Prior to the 1800’s‚ willow bark was often brewed into a tea‚ or chewed to relieve pain. While the salicylic acid is effective at reducing pain it was found to irritate the lining of the stomach. It was mostly by chance that on August 10‚ 1897 Felix Hoffmann‚ a German chemist who obtained
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Table 8.1- Combustion of magnesium ribbon Observations Reaction was exothermic; magnesium ribbon burned and was glowing a bright white color when ignited. Reactants: Mg and O2 Products: MgO Balanced chemical equation 2Mg + O2 2MgO Table 8.2- Combustion of heptane Observations When holding test tube inverted over heptane flame‚ condensation formed against top walls of the test tube. When the burning splint was added the walls of the test tube became less foggy from the condensation
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