Form 6 Chemistry Practical Experiment 18: Cis-Trans Isomers of But-2-enedioic acid Introduction Cis-trans isomers are a kind of stereoisomers called geometrical isomers. Due to the inability of rotation about the C=C bond‚ some compounds possess cis and trans isomers. But-2-enedioic acid is an example of having both isomers. Maleic acid Fumaric acid Cis and trans isomers have different physical properties such as boiling point‚ solubility‚ density and stability
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1. Separating out the Iron: 2. Separating out the Sand: 3. Separating out the Benzoic Acid: 4. Separating out the Salt: Grams Percent of Mixture Weighing Dish 0.5 .5/6 * 100= 8.3% 10cm Paper 0.6 .6/6 * 100= 10% Iron 1.9 1.9/6 * 100= 31.7% Sand 1.1 1.1/6 * 100= 18.3% Benzoic Acid 0.5 .5/6 * 100= 8.3% Salt 1.4 1.4/6 * 100= 23.4% Total 6.0 100% Questions: 1. How did your proposed procedures or flow charts at the beginning of this experiment compare to the actual procedures
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determine the purity of the product that is collected and filtered and recrystallized. Experimental Procedure: The experimental procedure used for this experiment was outlined in the CHEM 123L lab manual‚ Experiment #1. All steps were followed without deviation. Experimental Observations: Table 1: Experimental Data Values obtained in the Experiment Observation Value of
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UNIVERSITY OF WATERLOO Department of Chemistry Synthesis of ACETAMINOPHEN Laboratory Report 1 CHEM 123L January 19‚ 2014 Prepared for: Dr. S. Stathopulos Department of Sciences‚ Chemistry Faculty University of Waterloo Teaching Assistant: Aaron Chan Prepared by: Section 001 Vithurjan Satkunarasan 20495383 Lab Partner: Ken Xu Introduction The synthesis of Acetaminophen is based on the amine group of p-aminophenol being acetylated by acetic anhydride to form an amide functional group
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Experiment Four: Organic Synthesis of Aspirin Abstract The purpose of this experiment is to synthesize a common organic product called acetylsalicylic acid (aspirin)‚ and to become familiar with the optimum conditions needed for successful yields. Aspirin is produced from an acid catalyzed reaction between salicylic acid with acetic anhydride. The crystalline aspirin is synthesized and purified by recrystallization‚ although there is not a hundred percent yield due to sources of error. Introduction
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Chemistry Review sheet: Unit 1- Lesson 1‚ 2 *Key notes to keep in mind* ü Metals have a high low ionization energy ü Non-metals have a high electron affinity · Atom: The basic unity of an element which still retains the elements properties · Atomic number: the unique number of protons in the nucleus of a particular element · Isotope: Atoms of the same element which contain a different number of neutrons · Periodic law: The chemical
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structure of water Lewis structures (also known as Lewis dot diagrams‚ electron dot diagrams‚ and electron dot structures) are diagrams that show the bondingbetween atoms of a molecule and the lone pairs of electrons that may exist in the molecule.[1][2][3] A Lewis structure can be drawn for any covalently bondedmolecule‚ as well as coordination compounds. The Lewis structure was named after Gilbert Newton Lewis‚ who introduced it in his 1916 article The Atom and the Molecule.[4] They are similar
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Synthesis of 1-Bromobutane from 1-Butanol Reference: Discovering Organic Chemistry in the Laboratory; John R. Ganson Ph. D‚ Revised 2011 by Alfredo Mellace Ph. D www.Aldrich.com Purpose: To synthesize 1-bromobutane from 1-butanol via SN2 reaction. Alcohols are converted into the alkyl halides adding an aqueous solution sodium bromide. The sulfuric acid acts as a catalyst in converting the OH functional group of butanol‚ to a better leaving group. In order for this reaction to synthesis 1-Bromobutane
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consolidation of memory which could have important implications for school success in adolescence. (introduction) SARA JERUSS‚ 17‚ a senior at Masuk High School in Monroe‚ fights to stay awake every morning during her first period physics class. (par. 1) ’’It has been my experience that coming into school later‚ whether it be due to delayed opening‚ having first period free‚ or simply my exhaustion from lack of sleep‚ improves my ability to concentrate during school and actually comprehend and absorb
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Hala Sughayar iLab: Week 1 BALANCE LAB Introduction The purpose of this week’s iLab is to find the weight of different objects and record my findings/data. I will record my data on a chart. My observations will determine why each scale has a different weight for the same object being weighed. The two techniques practiced here are direct weighing and weighing by difference. The skills required vary depending upon the kind of balance used. In this lab I will practice the techniques required
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