Question

explain with the help of example , why unsaturated hydrocarbons give addition reactions?? plzz answer

Answer 1

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.

Answer 2

Explanation:

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The compound in which the valency of all the atoms is either satisfied by the double or triple bond is called unsaturated hydrocarbon.

Examples:- ethene, propyne.

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