Presence of which reagent will affect the reversibility

Question:

Presence of which reagent will affect the reversibility of the following reaction, and change it to a irreversible reaction :

 

  1. $\mathrm{HOCl}$

  2. dilute $\mathrm{HNO}_{2}$

  3. Liquid $\mathrm{NH}_{3}$

  4. Concentrated $\mathrm{HIO}_{3}$


Correct Option: , 4

Solution:

lodination of alkane is reversible reaction.

It can be irreversible in the presence of strong oxidising agent like conc. $\mathrm{HNO}_{3}$ or conc. $\mathrm{HIO}_{3}$

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