Sunday, March 30, 2014

HYDROCARBONS

                                                    HYDROCARBONS


                   Organic compounds of Hydrogen and Carbon are known collectively as hydrocarbons.
                 
                   Carbon has valance of 4, hydrogen is mono-valant. therefore one atom of carbon can combine with four atom of hydrogen.

Saturated and unsaturated hydrocarbons compounds:

                      when all the carbon atoms "bonds" are used to hold other atoms,the compound is said to be "standard".
                      Similarly a compound witch dose not have all the carbon atoms up by other atoms is said to be "unsaturated".
                     Unsaturated compounds will have at least one double bond. there are millions of different ways in witch carbon and hydrogen atoms can be connected  together to form hydrocarbon molecules.  to help describe these in a systematic way, science has classified hydrocarbons into various families depending on their molecular structure  in petroleum chemistry.

Hydrocarbons are classed primarily into four groups:

1. Paraffins      - saturated
2.Naphthenes   - saturated
3.Olefins          -Unsaturated
4.Aromatics     -Unsaturated

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