question_answer

Hydrogen iodide cannot be prepared by the action of conc. \[{{H}_{2}}S{{O}_{4}}\] on potassium iodide because [Bihar CEE 1995]

A) \[HI\] is stronger than \[{{H}_{2}}S{{O}_{4}}\]

B) \[HI\] is more volatile than \[{{H}_{2}}S{{O}_{4}}\]

C) \[{{H}_{2}}S{{O}_{4}}\] is an oxidising agent

D) \[{{H}_{2}}S{{O}_{4}}\] forms complex