Final answer:
In the corrected equation 2H2O2 → 2H2 + O2, the reactant is hydrogen peroxide (H2O2), and the products are water (H2) and oxygen gas (O2). This reaction showcases the decomposition of hydrogen peroxide.
Step-by-step explanation:
It appears there's a minor typographical error in the chemical equation presented. Assuming the correct equation is 2H2O2 → 2H2 + O2, which represents the decomposition of hydrogen peroxide into water and oxygen gas. In this case, the reactant is hydrogen peroxide (H2O2), and the products are water (H2) and oxygen gas (O2). This type of reaction is known as a decomposition reaction because a single compound breaks down into two or more simpler substances.