Abstract The aliphatic and aromatic hydrocarbon are can be differentiate by .For example‚in the experiment involving aliphatic hydrocarbon which is cyclohexane that undergo the reaction with bromine water in the presence of UV light.This reaction is known as substitution reaction.The cyclohexane that react with bromine under present of UV light will change to slightly brown while the other one has no changeous which is still brown.For baeyer’s test‚the alkane which is heptanes will not undergo the
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The Leicester School of Pharmacy Faculty of Health and Life Sciences PHAR1603 Pharmaceutical Chemistry Module Handbook 2014-15 The Leicester School of Pharmacy MPharm (Hons) The Module Team Room Email address Phone (0116 …) Dr G Hall (GH‚ Module Leader) HB2.25n ghall@dmu.ac.uk 257 7278 Dr P Bremner (PB) HB1.03 pbremner@dmu.ac.uk 257 7922 Dr J Dixon HB1.16 jdixon@dmu.ac.uk 207 8117 Prof. Katherine Huddersman (KH) HB2M1 huddzeo1@dmu
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Alkanes This is the correct chemical term for compounds known as paraffins. They are considered the simplest organic compounds and are a family of chain hydrocarbons having the general formula C2H2n+2. All of the bonds are single bonds (-C-H-‚ and -C-C-). The chains can be straight or branched. The smaller members (less than 4 carbons) are gases‚ while larger ones (five to seventeen carbons) are liquids. Beyond seventeen carbons the alkanes are waxy solids. Structure: The simplest saturated acyclic
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Hydrocarbons – Methane (Alkanes) Introduction to Hydrocarbons – Methane Carbons have the ability to form many different compounds. Compounds of carbon that only contain carbon and hydrogen are known as hydrocarbons. Most hydrocarbons naturally occur in the mixture crude oil. There are three main types of hydrocarbons‚ alkanes – saturated hydrocarbons made up of only single bonds‚ alkenes – unsaturated hydrocarbons with one or more double bond/s‚ and alkynes – unsaturated hydrocarbons with one or
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all aromatic compounds known today share the same distinction (many are in fact‚ odorless or even unpleasant)‚ they are the principle components in such pleasant smelling substances as cinnamon‚ licorice‚ wintergreen‚ clove & vanilla CLASSIFICATION – - also known as arenes‚ many aromatic compounds possess the benzene ring functional group: G’s FG = aromatic compound or arene benzene ring or aryl grp - other compounds which do not contain a benzene ring are also referred to as “aromatic” based
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Alkanes are saturated hydrocarbons. They contain only carbon-carbon and carbon-hydrogen single bonds. They are the least reactive of the organic compounds. The main source is crude oil. Hydrocarbon- a compound consisting only of hydrogen and carbon Saturated- Contain single carbon -carbon bonds only Unsaturated-contains a C=C bond Petroleum fraction- mixture of hydrocarbons with a similar chain length and boiling range The general formula for is CnH2n+2 (for ring alkanes is CnH2n)
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Nomenclature of Aromatic Compounds Aromatic Compounds- possess a ring shaped structure Benzene (C6H6)- aka. naphtha - unsaturated cyclic compound - simplest aromatic HC - all C to C bonds are identical; each C has a H atom - substitution reactions occur instead of addition reaction - delocalized pi bonding in benzene imparts stability (aromaticity); responsible for resistance to addition reactions (involve breaking delocalized bonding) Benzene Derivatives- produced when one or more H atoms on benzene
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Alkanes The reaction between alkanes and fluorine This reaction is explosive even in the cold and dark‚ and you tend to get carbon and hydrogen fluoride produced. It is of no particular interest. For example: The reaction between alkanes and iodine Iodine doesn’t react with the alkanes to any extent - at least‚ under normal lab conditions. The reactions between alkanes and chlorine or bromine There is no reaction in the dark. In the presence of a flame‚ the reactions are
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Deegan & Unerman – Financial Accounting Theory 2e Chapter 4 Answer 4.1: Chapter 4 has provided a number of factors which have been suggested to explain why different countries use different systems of accounting. These include: o The extent of economic development within a country. It is argued that as countries become more ‘wealthy’ they tend to develop their own accounting standards (which can be costly). Less developed countries often adopt accounting standards issued by the IASC (which
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AUO1 Additional Study Questions What is the difference between transaction processing systems‚ management information systems‚ and decision support systems? Transaction processing systems - document financial activities Management information systems - used to collect qualitative as well as quantitative information for decision making within organizations Decision support systems - help the developers of an AIS identify what information they need for their planning‚ decision making‚ and control
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