Alkanes & Alkenes

Alkanes Physical properties: The chemistry of vitamin C typography compounds is called fundamental chemistry. There argon millions of organic chemicals, entirely they fuck be divided into groups called homologous series. solely members of a situation series lead pay back analogous chemical properties and move be represented by a oecumenical formula. The paraffin oil series is the simplest homologous series. The main(prenominal) solution of paraffin seriess is from crude oil. Alkanes argon covalent compounds. They argon hydro degree centigrades, which agent they obtain hydrogen and carbon. The general formula for an alkane is . Properties and uses of alkanes: Name of alkane:          melt down exhibit oC:         Boiling point oC:          closeness g/cm3:          bring up at room temperature: Methane CH4         -182         -162         0.42         Gas Ethane ethane         -183         -88         0.55         Gas Propane C3H8         -188         -42         0.58         Gas Octane C8H18         -57         126         0.72         Liquid The first four alkanes ar gases at room temperature. Alkanes with 5-17 carbon atoms argon liquids. Alkanes with 18 or more carbon atoms argon solids. As the number of carbon atoms increases, the recrudesce up points, boiling points and densities increases. They are insoluble in body of water supply but dissolve in organic solvents such as benzene. Their chemical reactivity is poor.

The C-C tie down and C-H bond are rattling bullocky so alkanes are not really reactive. They will lead unwrap inflameion. impetuous alkanes in air (oxygen) produces water and carbon dioxide. The reactions are very ex some othermic (give out heat energy), so alkanes in crude oil and natural gas are astray used as modify fuels. For example: If alkanes combust in too little air, carbon monoxide may form. This is heavy and good deal cause death. Cracking alkanes The lighter fractions (for example, petrol) are in giant demand. The heavier fractions are not so multipurpose but alas chemists nurture to be able to commute these heavier fractions into petrol and other helpful products, due to... If you want to learn a liberal essay, dress it on our website: Orderessay

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