Thu July 14, 2011 By:

saturated hydrocarbons give a clean flame on burning whereas unsaturated doesnot.why does this happen.explain. also explain the true meaning of saturated and unsaturated hydrocarbons?

Expert Reply
Thu July 14, 2011
The sataurated hydrocarbons burn completely but in unsturated hydrocarbon there is  incomplete combustion therfore they burns with blue and yellow flame respectively. 
The saturated hydrocarbon are the simplest of the hydrocarbon species and are composed entirely of single bonds and are saturated with hydrogen. The general formula for saturated hydrocarbons is CnH2n+2 (assuming non-cyclic structures). 
Saturated hydrocarbons are the basis of petroleum fuels and are either found as linear or branched species. 
Unsaturated hydrocarbons have one or more double or triple bonds between carbon atoms. Those with double bond are called alkenes. Those with one double bond have the formula CnH2n ; CnH2n-2(assuming non-cyclic structures).
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