Question

In halogenation reaction, which of the following are true?

1) Halogenation is a reaction in which a halogen atom is added to a molecule.
2) Halogenation can occur with different halogens such as chlorine, bromine, or iodine.
3) Halogenation reactions are typically exothermic.
4) Halogenation reactions always result in the formation of a single product.

Answer 1

Halogenation reactions do not always result in a single product. Multiple products can be formed when halogens react with alkanes, alkenes, or alkynes, depending on the reaction conditions.

Step-by-step explanation:

In the context of halogenation reactions, it is not true that they always result in the formation of a single product. Halogenation is a type of chemical reaction where a halogen reacts with a substrate, such as alkanes, alkenes, or alkynes. With alkanes, multiple halogenation products can form because halogens like chlorine and bromine can replace one or more hydrogen atoms in the hydrocarbon. Therefore, compounds like methane can produce a variety of halogenated products depending on the reaction conditions.

Moreover, halogenation with alkenes and alkynes typically involves addition reactions, where halogens add to the multiple bonds between carbon atoms. This can lead to multiple products due to the formation of dihalides, which can be produced as either vicinal or geminal dihalides depending on the specific conditions of the reaction.

Therefore, the statement that halogenation reactions always yield a single product is incorrect; the nature and number of products formed can vary widely based on the reactants and reaction conditions.