Respuesta :
Answer: When an unsaturated hydrocarbon undergoes complete addition, the product is a saturated molecule because in unsaturated molecule double and triple bond is present so during addition reaction one carbon - carbon bond will get break down and form alkane.
Example: Ethene + H2 ⇒ Ethane
Here , ethene double bond can breakdown and form ethane.
A compound containing double or triple bonds is called unsaturated hydrocarbons. The unsaturated hydrocarbon reacts to form a saturated molecule.
What are addition reactions and unsaturated hydrocarbons?
An addition reaction is a type of chemical reaction in which the atoms of the reactants simple gets added to produce molecules of products.
Unsaturated hydrocarbons are compounds that include at least one double or triple bond. When the unsaturated hydrocarbon gets added then the double or the triple bond breaks to form the saturated or a single bond hydrocarbon as the product.
Therefore, unsaturated hydrocarbon undergoes an addition reaction to form option B. saturated molecule.
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