Yes, in the reaction you mentioned, the oxidizing agent is hydrogen peroxide (H₂O₂). The oxidizing agent is the species that accepts electrons from another species, causing it to undergo oxidation. In this reaction, hydrogen peroxide is oxidized from an oxidation state of -1 to 0, and it acts as the oxidizing agent by accepting electrons from the iron (II) ion (Fe²⁺), which is then oxidized to iron (III) ion (Fe³⁺).
