Hans Fischer is a well known chemist who was awarded the Nobel Prize for chemistry in 1930. The animal’s’ natural coloring matter‚ tissue of plants‚ and red blood pigments is what Hans Fischer dedicated his scientific career to. Because Hans Fischer’s father was the director of the chemical dye‚ Hans was well acknowledged of the color of chemicals‚ which is known as the chemistry of color. Hans Fischer was one of the best chemist‚ because he was awarded the Nobel Prize‚ researched biological pigments
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Esterification Lab Introduction Esterification is an important part of organic chemistry that has many practical applications. Esterification can be used to make polymers. In most cases‚ esters are used for scents – they often smell fruity and sweet. In general‚ an esterification reaction results from a condensation reaction between a carboxylic acid and an alcohol. The carboxylic acid group loses an OH group‚ and the alcohol loses and H. For instance‚ the reaction between methanoic acid and methanol
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Synthesis The old acetate department located in an old four storey building follows a workflow that is heavily based on shifts/rotations because production is based on a per batch basis. A typical shift‚ the group leader and his crew would complete two or three batches. The night shift usually has lesser work because no deliveries were made. In the new system‚ the management wants to improve productivity. The department was redesigned from batches to continuous processing. Technical changes
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Preparation of Fruit Flavors (Pear) Abstract. In this experiment an assigned Ester is prepared‚ particularly n-Propanol. The Preparation was done via Fischer reaction. In this reaction‚ a reflux set-up is required. The reflux set-up was used in the liquid-liquid extraction. After adding an immiscible solution to the compound containing n-Propanol‚ the mixture now will have two layer: the Organic and Aqueous layer. The organic layer is the extract needed and its % yield is computed resulting to
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Undoped and Ce doped ZnO thin films were prepared by the sol-gel process. Zinc acetate dehydrate was dissolved in a mixture of absolute ethanol and monoethanolamine (MEA) yielding to a precursor concentration of 0.4 M .The MEA to zinc acetate molar ratio was set to 1. For doped films‚ cerium nitrate was added to the mixture with an atomic percentage fixed at 0.1‚ 0.3‚ 0.5‚ 0.7‚ and 0.9 at.% Ce‚ respectively. The resulting sols were magnetically stirred at 60°C for 1 hour and then aged at room temperature
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Synthesis of Aspirin Learning Goals 1. To synthesize aspirin from salicylic acid and acetic anhydride. 2. To purify the crude product by Recrystallization. Introduction Most drugs are chemical compounds which are described as "organic compounds" because they are comprised primarily of the elements carbon‚ hydrogen and oxygen. The present experiment will be the synthesis of a familiar organic compound called aspirin. The common chemical name is acetylsalicylic acid. Aspirin‚ the
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BACKGROUND: Esterification is a reaction that combines an alcohol with an organic acid‚ with a water molecule is being taken out‚ and an ester is formed. A concentrated acid catalyst speeds up the esterification. In this experiment set up‚ sulphamic acid was used‚ as it is a solid acid and be added dry‚ without any water‚ which is a reactant in this experiment equilibrium. Esterification is a slow and reversible reaction. The equation for the reaction between an acid RCOOH and an alcohol RẬᶦ
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250 ppm‚ 200 ppm‚ 100 ppm‚ and 25 ppm of 12C solution was prepared from a caffeine stock solution using ethyl acetate as the solvent. 250 µL of each dilution was added to a respective 0.6 mL vials with 50 µL of 13C and mixed. Next‚ three 15 mL centrifuge tubes were labeled as “Unknown A‚” three were labeled as “Unknown B” and one was labeled “Control.” To each tube‚ 4 mL of ethyl acetate and 1 mL of the respective unknown or control (100 ppm 12C solution) was added to the respective flasks. Each
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The goals of this experiment are to determine if the products derived from amide synthesis and Williamson Ether Synthesis are identical‚ and if one of the synthetic routes is more advantageous than the other. In Part 1‚ an attempt to synthesize acteophenetidin crystals by amide synthesis was made. We began by removing the colored impurities from the p-Phenetidine (reddish-brown) by placing 2g of the sample in 38 mL of hydrochloric acid and heating the solution to boiling point. Upon reaching just
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ACARS via Iridium Iridium is a large satellite constellation that consists of 66 low-earth orbiting (LEO)‚ cross-linked satellites operating as a fully meshed network providing truly global coverage (including oceans‚ airways and polar regions). Iridium satellites are in a near-polar orbit at an altitude of 485 miles. The network is composed of 66 active satellites that fly in six orbital planes‚ each with 11 satellites per plane. Satellites circle the earth once every 100 minutes. ACARS is
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