only. Five hydrocarbons were used namely hexane‚ cyclohexene‚ toluene‚ naphthalene (in hexane)‚ and the unknown (which will be known through parallel chemical tests). Three tests‚ nitration test‚ bromine test and basic oxidation test were conducted to fully differentiate each type of hydrocarbon from one another. Nitration tests resulted to three positive outcomes and two negative outcomes. A positive outcome in the nitration test shows that the hydrocarbon is aromatic while a negative outcome is
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Department of Psychology‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Four organic samples: hexane‚ cyclohexene‚ napthalene and toulene were given to serve as reference standards to characterize and distinguish four unknown given samples. Nitration‚ bromine and basic oxidation testswere conducted to classify the different samples from being an aliphatic‚ or aromatic‚ saturated or unsaturated and alkylated or non-alkylated hydrocarbons. The physical state and color were noted by simple physical
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properties in terms ofstructure and behaviour. Nitration test (test for the presence of aromatic ring)‚ Bromine test (test for the presence of unsaturation)‚ and Basic oxidation test (test for an alkyl substituted benzine) were done. We were given an unknown which we tested (Nitration‚Bromine‚ Basic oxidation) and found out that it was an aromatic unsaturated hydro carbon. Keywords: hydrocarbons‚ hexane/ cyclohexane‚ cyclohexene‚ naphthalene‚ toluene 1. Introduction This experiment
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Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines Abstract The organic compounds hexane‚ toluene‚ cyclohexene and naphthalene in hexene were subjected to parallel chemical testing to differentiate their intrinsic physical properties in terms of structure and behavior. The physical state and color were noted by simple physical observation. Nitration Testing was conducted for preliminary parallel testing until a positive result of yellow oil was seen. For the second and final testing
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major types. Hydrocarbons react differently in reagents. The basis of determining an unknown hydrocarbon is due to the differences in reactions of hydrocarbons. An unknown compound is determined using tests. The unknown gives a positive result in nitration test and gives no brown precipitate in oxidation test. The unknown is an aromatic and non-alkylated compound. _______________________________________________ Introduction: Hydrocarbons are organic compounds that composed of only hydrogen and
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Department of Biological Sciences - College of Science‚ University of Santo Tomas‚ Manila ABSTRACT The unknown hydrocarbon sample was differentiated and characterized by the use of three tests. The outcomes of these tests are as follows: Nitration test (negative)‚ Bromine test (positive) and Basic Oxidation test (positive). From these results the unknown sample can be classified as non-aromatic and unsaturated. INTRODUCTION Hydrocarbons are organic compounds that consist of only C and
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benzene ring. Those compounds which contain more than one benzene ring are known as polynuclear aromatic hydrocarbon like naphthalene‚ anthracene etc. The aromatic compounds are generally taken as derivatives of benzene. Benzene and its derivatives are mainly used in synthetic organic chemistry. The main source of polynuclear aromatic compounds is coal tar. For example‚ naphthalene is the largest single constituent (6 - 10%) of coal tar. It is mainly found in middle oil fraction of coal tar distillation
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Paracetamol - a curriculum resource Frank Ellis RSeC ROYAL SOCIETY OF CHEMISTRY Paracetamol - a curriculum resource Compiled by Frank E llis Edited by Colin Osborne and Maria Pack Designed by lmogen Bertin Published by the Royal Society of Chemistry Printed by the Royal Society of Chemistry Copyright 0 Royal Society of Chemistry 2002 Registered charity No. 207890 Apart from any fair dealing for the purposes of research or private study‚ or criticism or review‚ as permitted under
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Arenes The aromatic hydrocarbons also have the name arenes. They contain in their molecule one or more cycles made up from 6 carbon atoms. When the molecule is formed out of a single cycle‚ the hydrocarbons are mono nucleuses; when the molecule contains more than one cycle‚ the hydrocarbons are poly nucleuses. The simplest aromatic hydrocarbon‚ benzene‚ is compound out of just one such cycle; its formula is C6H6. The representation of benzene through a cycle of 6 carbon atoms with 3 double bounds
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20711 Lab Experiment: Nitration of Bromobenzene Introduction: The chemical reaction of nitration consists of a nitro group being added to or substituted in a molecule. Nitration can basically be carried out by a mixture of concentrated nitric acid and sulfuric acid; this mixture is useful to obtain the active nitronium ion. Electrophilic aromatic substitution is a method used when a functional group is needed to be substituted on to an aromatic compound. In the nitration‚ nitronium ion acts as
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