Name: Saj Jo Dan C. Odsey Date Performed: April 26‚ 2013 Lab-partner: Viktoria R. Beltran RELATIVE RATES OF ELECTROPHILIC AROMATIC SUBSTITUTION I. Objective(s) In this Experiment‚ the relative reactivities of different substituted benzenes towards bromination will be determined‚ where bromine is dissolved in acetic acid. Materials and apparatus Test solutions: 0.2 M solutions in ethyl acetate: Benzene‚ chlorobenzene‚ phenol‚ nitrophenol‚ aniline
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AS LEVEL CHEMISTRY ASSESSED HOMEWORK Answer all questions Max 86 marks Name …………………………………………………………….. Mark ……../86 ……....% Grade ……… 1. The graph below shows the boiling points of some alkanes. (a) Draw a smooth curve through the points on the graph and estimate the boiling points of octane C8H18‚ ……………… hexadecane‚ C16H34 .……………… [2] (b) State how decane‚ C10H22‚ can be separated from a mixture of the alkanes. .......................................
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Abstract:The Wittig Reaction is a nucleophilic addition in which an alkene is formed as a product. Both the E and Z isomers of the alkene result. Substituents on the aromatic aldehyde affect the E/Z ratio of products that form. In this experiment‚ a nitro group was used as the substituent in the ortho‚ meta and para positions‚ with benzaldehyde as the control. Each of the four aldehydes reacted with (carbethoxymethylene) triphenylphosphorane to produce ethyl cinnamate‚ ethyl-3-(2-nitrophenyl)acrylate
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ISOMERIZATION OF AN ALKENE Martin‚ Marilen1‚ Lovenia‚ Melden D.2 1Professor‚ School of Che-Chm-BE-MSE‚ Mapua Institute of Technology; 2Students‚ Chm145L/A41‚ School of Che-Chm-BE-MSE‚ Mapua Institute of Technology ABSTRACT The experiment was conducted to accomplish the following objectives. The first objective aims to synthesize an isomer of alkenes. This was done by converting maleic acid to fumaric acid. This conversion was accomplished by applying a heat-catalyzed reaction on maleic acid
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M. Ashrafuzzaman et al / Research Journal of Biology (2012)‚ Vol. 02‚ Issue 03‚ pp. 98-103 ISSN 2049-1727 Research Paper Comparative Study on Regeneration Potentiality of Aromatic Indica Rice (Oryza sativa L.) of Bangaldesh Golam Gaus Mohiuddin Chowdhury1‚ M. Ashrafuzzaman*1‚ F. Raihan2 and Shamsul H. Prodhan1 1 Department of Genetic Engineering and Biotechmology‚ School of Life Sciences‚ Shahjalal University of Science and Technology‚ Sylhet-3114‚ Bangladesh 2 Department of Forestry
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Tricarbonylchromium Derivatives of Aromatic Compounds. By B. NICHOLLS M. C. WHITING. and Many aromatic compounds‚ ArH‚ displace carbon monoxide from chromium hexacarbonyl with the formation of complexes Cr(CO)‚(ArH) (I). These are stable and may carry any of several functional groups. The effects of the metallic residue upon typical properties of these groups and of the aromatic system as a whole are outlined‚ and methods for the regeneration of the aromatic components are described. TRICARBONYLBENZENECHROMIUM
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is a critical environmental issue that can have fatal health impacts on people of all ages‚ especially children‚ in both developed and developing countries. Exposure to air pollutants like ground-level ozone‚ particulate matter‚ and polycyclic aromatic hydrocarbons (PAHs) can have damaging effects on fetal and early childhood development such
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BIOREMEDIATION INTRODUCTION:- The process of bioremediation was reportedly devised by George M Robinson in the 1960 during experimentation with dirty jars and the introduction of microbes this was however not applied until the 1972 clean out of the fuel holding tanks on the RMS queen mary. Science 1972 bioremediation has become greater developed as a means of cleaning up spills of gasoline diesel ‚ heavy metals and other easily degraded petroleum products (National Research Council 1993). Bioremediation
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very toxic and known to cause lung cancer. Butadiene an industrial chemical used in rubber manufacture. Some scientists believe that of all the chemicals in tobacco smoke‚ Butadiene may present the greatest overall cancer risk. Polycyclic aromatic hydrocarbons a group of powerful cancer-causing
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at a molecular level of cigarette smoke and other risk factors that causes lung cancer‚ all these smokes and gases contain several carcinogenic components. The most carcinogenic components in cigarette smoke are benzo[a]pyrene (BaP)‚ a polycyclic aromatic hydrocarbon‚ and nitrosamine (10). BaP is activated by the phase I enzymes that are responsible for the metabolism of xenobiotics‚ the cytochrome P450 enzymes (CYPs) (13). CYPs detoxify a wide variety of xenobiotics but also is an enzyme that provides
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