Question

What is(are) true regarding free radical iodination of the alkane?

• A. It occur very rapidly because of very small value of bond energy of $I_2$
• B. Direct iodination of alkane with $I_2$ in presence of light is impractical
• C. Iodination of alkane can be achieved successfully using an oxidizing agent catalyst
• D. Presence of some $HCI$ active the free radical iodination

Answer 1

Answer: (B), (C)

Direct iodination of alkane with $I_2$ in presence of light is impractical
Iodination of alkane can be achieved successfully using an oxidizing agent catalyst

The statements (B) and (C) are true regarding free radical iodination of the alkane.

(B) Direct iodination of alkane with iodine in presence of light is impractical.
During this reaction, $Hl$, a strong reducing agent is obtained as byproduct, which catalyzes the reverse reaction thereby preventing direct iodination of alkane.

(C) Iodination of alkane can be achieved successfully using an oxidizing agent catalyst.

Presence of an oxidizing agent oxidizes unwanted byproduct $Hl$ and enables iodination of alkane to proceed.