volume of acetic anhydride 1.00 mL Moles of acetic anhydride 0.0110 mol Initial volume of phosphoric acid 0.300 mL Initial moles of phosphoric acid 5.15*10^-3 mol Limiting reagent Ferrocene Moles of limiting reagent 1.21*10^-3 mol Final weight of product 0.288g Theoretical yield 29.49 Moles of product 3.73*10^-4 mol % yield 97% melting point (°C) of product 128°C -131°C Calculations: Moles of Ferrocene 0.225g * mol of ferrocene/186.0g = 1.21 *10^-3 Moles of acetic anhydride 1.0mL *1.08g/mL
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the common ones: acid halides‚acid anhydrides‚ esters and amides.Carboxylic acids and their derivatives areusually seen in industrial processes and mostbiological pathways. Esters can be seen as fatsand within the cell membrane. Esters are alsopresent in pleasant smelling liquids that areresponsible with the fragrant odor of fruits andflowers. Amides are also present in animalprotein and also in industrial products such asnylon. Acid chlorides and acid anhydrides areused in the synthesis of carboxylic
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Questions: What health problems might be in store for patient 2 (based on the results)? You correctly answered: e. All of these health problems might be in store for patient 2. Experiment Data: Blood sample 1 2 3 4 Approximate Total Cholesterol (mg/dl) 150 300 150 225 12/29/14 page 2 Cholesterol Level desirable elevated desirable borderline elevated Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. In this test for total blood cholesterol‚ elevated levels of
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Social Alchemy 2nd Quarter / SY 2012 – 2013 Eng’r. Josephine A. Ng CHM142L/B21 Concepcion‚ Jermin B. Group# 2 Experiment No. 1 ------------------------------------------------- MELTING POINT AND BOILING POINT OF ORGANIC COMPOUNDS ------------------------------------------------- ABSTRACT The melting point (MP) and the boiling point (BP) are probably the most widely used physical constant in the field of science. Determining the boiling point and the melting point of a compound helps you to characterize
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Acetylation of α-D- glucopyranose 1. Reagents (1)2.5g(0.014mol) powdered D-glucose (2)0.5g ZnCl2 (3)12.5ml acetic anhydride (4)Cold water (5)120ml Ice water (6)Methanol 2. Physical properties Compounds | M.W. g/mol | M.P.℃ | B.P.℃ | Density g/cm3 | D-glucose | 180.16 | 146 | - | 1.54 | ZnCl2 | 136.315 | 292 | 756 | 2.907 | Acetic anhydride | 102.9 | -73.1 | 139.8 | 1.082 | Methanol | 32.04 | -98~-97 | 64.7 | 0.7918 | α-D- glucopyranose | 390.34 | 109-112 | 452
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Activity 2.2.2: Anna Garcia – Nutrient Analysis Food Groups Target Average Eaten Status Grains 6 ounce(s) 9 ounce(s) Over Whole Grains ≥ 3 ounce(s) 1 ounce(s) Under Refined Grains ≤ 3 ounce(s) 8 ounce(s) Over Vegetables 2½ cup(s) 2¾ cup(s) OK Dark Green 1½ cup(s)/week 0 cup(s) Under Red & Orange 5½ cup(s)/week 1½ cup(s) Under Beans & Peas 1½ cup(s)/week 0 cup(s) Under Starchy 5 cup(s)/week ½ cup(s) Under Other 4 cup(s)/week ¾ cup(s) Under Fruits 1½ cup(s) ½ cup(s)
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aspirin was found to be salicylic acid‚ which has the phenolic and carboxylic acid groups that causes irritation in the lining of the stomach‚ mouth and the throat. Thus‚ acetyl anhydride was added to salicylic acid and the reaction synthesises acetylsalicylic acid‚ which contains an ester group. The addition of acetyl anhydride causes the phenolic group in salicylic acid to change to an acetyl group‚ R—OH R—OCOCH3 Hydroxyl group
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and by prescription (Rx) from a physician. OTC preparations: Aspergum‚ Bayer Aspirin‚ Bufferin‚ Ecotrin‚ Empirin‚ Halfprin‚ St. Joseph Aspirin‚ and many generics. Rx preparation: ZORprin Aspirin is synthesized from the acetylation (using acetic anhydride or acetyl chloride) of salicylic acid. Salicylic acid is a natural product
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CHEM 2123 and 2125 – Organic Chemistry Lab I and II GUIDELINES FOR WRITING LAB REPORTS INTRODUCTION Writing reports in organic chemistry lab may differ from the way it’s done in general chemistry. One goal of this course is to introduce you to the record keeping methods used in research labs. Such methods are designed to organize experimental data in a format similar to that required for publication in major scientific journals. Here are some important considerations that apply in research settings
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Abstract: This experiment is to demonstrate the preparation of paracetamol and its properties. Reflux and filtration of 4-aminophenol and acetic anhydride formed the crude sample. Further analysis of dry white crystals were used to give quantitative measurements and a percentage yield of 46% was obtained. The overall conclusion is that the acetic anhydride reacted with the –NH2 group. Materials and Methods: 1. We weighed out (on a top-pan balance) 4-aminophenol (about 11.0g) in a weighing boat
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