Addition Reaction of Ethene with Hydrogen

In organic chemistry, addition reactions are a type of reaction where two or more reactants combine to form a single product. A classic example of an addition reaction is the reaction between an alkene and hydrogen (H₂) in the presence of a catalyst.

Consider the following reaction: C₂H₄ (ethene) + H₂ → ?

Which of the following products is formed from this reaction?