Redox Reaction Subtopic Half Reaction Method 01 Ques5

Question: In the reaction $MnO_4^- + C_2O_4^{2-} \rightarrow Mn^{2+} + CO_2$ , what is the change in oxidation state of manganese?

Options:

A) +7 to +2

B) +4 to +2

C) +6 to +2

D) +5 to +2

Show Answer

Answer: a

Explanation:

A) Correct. Mn in $MnO_4^-$ has an oxidation state of +7, and in $Mn^{2+}$ it’s +2.

B) The initial oxidation state is not +4.

C) The initial oxidation state is not +6.

D) The initial oxidation state is not +5.