Question

Which of the reactants act as oxidant or reductant if any:

$KI{O}_3+5KI+6HCl\to 3I_2+6KCI+3H_{2}O$

• A. $KI{O}_3$ is oxidant.
• B. $KI$ is reductant.
• C. Both of these
• D. None of these

Answer 1

The correct option is C Both of these

The oxidation number of I (in $KI$) increases from -1 to 0 (in $I_2$). Thus, $KI$ is oxidized and acts as reductant.

The oxidation number of I (in $KI{O}_3$) decreases from +5 to 0 (in $I_2$). Thus, $KI{O}_3$ is reduced and acts as oxidizing agent.