esterification reaction that was carried out in this lab is shown in figure 1. It worth mentioning that the by-product of such reaction is water. In organic chemistry‚ the reaction in which water molecule is released is known as condensation reaction (Hornback‚ 2006). Figure1 is drawn using Chem Sketch software. a) b) Figure 1: Typical Fischer esterification reaction (a) in comparison to the specific esterification reaction used in this lab (b) The reaction can also be categorized in terms of
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CHEM 2510 Laboratory Report: Recrystallization and Melting Points Cover Page: Recrystallization and Melting Points by Lab Instructor: January 28‚ 2014 Purpose: The purpose of this experiment was to recrystallize a 95% pure sample of benzoic acid contaminated with approximately 5% salicylic acid using two different methods to determine the melting points and discover the impurities of the substance
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Date of Experiment: September 10th‚ 2013 Organic Chemistry II – CHLB330 Name: Symone E. MoxeyLab Partner: Lynden Cooper Synthesis of Aspirin (Acetylsalicylic Acid) Abstract:- Aspirin (acetylsalicylic acid) is produced experimentally in the lab. The resulting percentage yield is 65.5%. The purity of the obtained product is tested using the melting point and Ferric Chloride Test (FCT). The aspirin was massed‚ and the melting point was determined. Based on the data collected‚ there was a total
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Since the Grignard reagent can easily react with water‚ all glassware including the 25 ml round bottom flask‚ magnetic stir bar‚ 3 and 5 ml conical vial‚ 50 mL Erlenmeyer flask‚ claisen adapter‚ drying tube and 5 glass pasteur pipets were first added to a 250mL beaker and placed in the oven for 30 minutes. After the completion of the thirty minutes‚ 0.150 g of shiny magnesium turnings and a stir bar was first added to the round bottom flask and the claisen adapter along with the drying tube packed
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Purpose: To find out the densities and to find out the name of the unknown metals. (Based on the extensive and intensive properties) Check up the words mass‚ volume‚ density‚ extensive properties‚ and intensive properties. Where do the units for mass and volume) come from and what do they mean? What is the density of distilled water? What is Archimedes principle? Does temperature affect the density of a solid? Liquid? Gas? Materials: Safety glasses‚ 10‚ 25 or 50 mL graduated cylinders
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Fishman Period 11 TCA #3 TITLE: Egg Shell Lab OBJECTIVE: To determine and compare the amount of calcium carbonate content of brown and white eggshells. MATERIALS: white and brown eggshells‚ water‚ deionized water‚ beaker‚ pipet‚ flask‚ test tube brush‚ funnel‚ hotplate‚ mortar‚ pestle‚ ethanol‚ HCl‚ phenolphthalein indicator‚ sodium hydroxide PROCEDURE: (Complete for both white and brown eggshells) 1. Get one egg and beaker and bring it to your lab station. 2. Break the egg into a beaker.
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CHEM 17 Expt.2-Coupled Reactions 4/18/12 Results and Discussions: One way to obtain products from a non-spontaneous process that is exhibited in this experiment is by “coupling” two reactions. The principle of Coupled Reactions is based on a simple concept: we can use a thermodynamically favorable (spontaneous) reaction to drive an unfavorable one. One step is allowed to supply enough free energy for the other to occur. A coupled reaction is a system wherein a non-spontaneous
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Module Nine: Lab Questions ● ● ● ● ● ● ● ● ● 1. Which technique is the best choice when blood is found at a crime scene? In the genetics laboratory (under "resources" at the bottom of the window)‚ who is one individual that contributed to modern genetic analysis? What did this person contribute? Analyzing the blood in a lab would be the best technique‚ Alec Jeffrey’s is known as the father of genetic profiling. He invented what is now an essential technique. Also he linked a murderer to two young girls
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CHEM 2303 ANALYTICAL CHEMISTRY II LECTURE 2 – APPLICATIONS OF SPECTROPHOTOMETRY TENTATIVE LECTURE SCHEDULE Date Topics • Presentation / discussion of syllabus • Tips for success • Laboratory • Introduction to the analytical process • Sample preparation Jan 9th‚ 2015 • Spectrophotometry • Properties of light • Absorption of light • Excited states • Luminescence • Applications of spectrophotometry • UV-Vis spectroscopy • Fluorimetry Jan 16th‚ 2015 • Fluorescent staining‚ green fluorescent protein
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CHEMISTRY 17 1ST LONG EXAM REVIEWER I. ELECTRONIC STRUCTURE OF ATOMS -arrangement of atoms’ electrons -the number of electrons in an atom -distribution of electrons around the nucleus and their energies • ATOMS *Billiard Ball Model (JOHN DALTON) *Plum Pudding Model (JOSEPH J. THOMPSON) *RUTHERFORD’s Model of Atom -atoms are tiny‚ hard‚ indivisible spheres -electrons (negative charge) occupy the atom - Atom is mostly empty space with a dense nucleus • PROBLEMS with Rutherford’s Model
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