Question

Which of the following has greatest reducing power.

• A. $HI$
• B. $HBr$
• C. $HCl$
• D. $HF$

Answer 1

Answer: (A)

$HI$

Answer 2

$Br_{2} + 2KI \rightarrow I_{2} + 2KBr$ is the strongest reducing agent among halogen acids because of lowest bond dissociation energy.