In the scheme of the chemical reaction H2 + Cl2 = HCl, indicate the oxidizing agent and the reducing agent.

Н2 + Сl2 = 2Н (+) + 2Сl (-) Before the chemical reaction, both elements had an oxidation state of “0”. After a chemical reaction, hydrogen acquired an oxidation state of +1, that is, it oxidized, lost 1 electron, and chlorine acquired an oxidation state of -1, that is, recovered, added 1 electron. Therefore, hydrogen is a reducing agent (gave, elektorn, oxidized (ob)), and chlorine is an oxidizer (took elektron, recovered (ob)). These abbreviations are for quick memorization (as we were taught at the Dragomanov University): the reducing agent gave off oxidized (boo); the oxidizing agent was reduced (obb).