Redox Reaction Subtopic Half Reaction Method 01 Ques10

Question: In the half-reaction $ClO_3^- + 6H^+ + 6e^- \rightarrow Cl^- + 3H_2O$ , what is the oxidation state change of chlorine?

Options:

A) +5 to -1

B) +7 to -1

C) +3 to -1

D) +1 to -1

Show Answer

Answer: a

Explanation:

A) Correct. In $ClO_3^-$, Cl has an oxidation state of +5, and in $Cl^-$, it’s -1.

B) The initial oxidation state is not +7.

C) The initial oxidation state is not +3.

D) The initial oxidation state is not +1.