Question

$C{H_2} = C{H_2} + {H_2}$ gives $C{H_3} - C{H_3}$ is an example of:

Answer 1

Hint: Here the given reactant is ethene and it is converted into ethane. In a chemical reaction, the substance is transformed into other chemical substances by undergoing some reaction. And the species formed during the chemical reaction is known as a product. The reactant converts into products by passing them to a high energy transition state. And the chemical reactions are divided into different types, that is, synthesis, decomposition, addition, single replacement reaction and double replacement reaction.

Complete answer:
As we know that ethene is an unsaturated hydrocarbon and it is reacted with hydrogen in the presence of a catalyst like nickel and palladium and there is a formation of saturated hydrocarbons with ethane. Let’s see the reaction,
$C{H_2} = C{H_2} + {H_2} \to C{H_3} - C{H_3}$
This type of reaction is known as addition reaction. In the case of addiction reaction, two or more reactants will react together and there is formation of a larger single compound. The addition reaction is undergoing only the chemical compounds having multiple bond character as a triple bond or double bond will break and form a single bond.

Note:
We need to know that in the case of addition reaction, more than two molecules will combine and will get a larger product and this product is known as adduct. And the addition reaction is a reverse elimination reaction. For example, by the hydration of alkene, there is a formation of alcohol and it will be reversed by dehydration reaction. The addition reaction generally occurs in the case of unsaturated compounds. And the double bond or triple bond will break into a single bond.