why unsaturated hydrocarbons show addition reaction but saturated hydrocarbons not?
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Unsaturated hydrocarbons show addition reaction as
they contain multiple bonds in them (alkene or alkyne).They contain pie bond which is weaker than sigma bond and is easily broken down .Hence they show addition reactions.Eg. Catalytic reduction of alkene by hydrogen in the presence of catalyst such as nickle, platinum or palladium .
Saturated hydrocarbon consists of only sigma bonds which are strong and single only hence they are not easily broken down and these compounds do not undergo addition reaction.
they contain multiple bonds in them (alkene or alkyne).They contain pie bond which is weaker than sigma bond and is easily broken down .Hence they show addition reactions.Eg. Catalytic reduction of alkene by hydrogen in the presence of catalyst such as nickle, platinum or palladium .
Saturated hydrocarbon consists of only sigma bonds which are strong and single only hence they are not easily broken down and these compounds do not undergo addition reaction.
sm15:
this is because saturated hydrocarbons have single co valent bond but unsaturated hydrocarbons have double or triple bond in them
Answered by
14
Unsaturated hydrocarbons show addition reaction because they contain multiple bonds (that is double and triple bonds). These multiple bonds consist of pi bonds which can be easily broken. For example, unsaturated hydrocarbons add hydrogen in the presence of catalysts such as palladium or nickel to give saturated hydrocarbons.
On the other hand, saturated hydrocarbons possess no multiple bonds (they possess only sigma bonds), because of which they do not undergo addition reaction
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