Alkanes CANNOT be directly iodinated because .

Question

Alkanes CANNOT be directly iodinated because . (A) the reaction is too slow (B) the reaction is reversible (C) l2 is a weak reagent (D) alkanes do not react with l2

Tardigrade Admin · Accepted Answer

Alkanes cannot be directly iodinated because the reaction is reversible and fails to produce alkyl iodide. This is because, the by product

H I

formed is a very strong reducing agent and reduces the alkyl iodide back to alkane.
To prevent the reversibility of the reaction, we add strong oxidising agents like

H N O_{3}

or

H I O_{3} .

For the alkyl to be iodinated, we can use the halogen exchange reaction (Finkelstein reaction).

Q. Alkanes CANNOT be directly iodinated because _______.

the reaction is too slow

the reaction is reversible

$l_{2}$ is a weak reagent

alkanes do not react with $l_{2}$

Q. Alkanes CANNOT be directly iodinated because _______.

the reaction is too slow

the reaction is reversible

l2​ is a weak reagent

alkanes do not react with l2​

$l_{2}$ is a weak reagent

alkanes do not react with $l_{2}$