Answer to Question #169283 in General Chemistry for Syra Jara

Question

the  oxidizing agent and reducing agent in each of the following reactions :

. iron (III) oxide + carbon     →          iron + carbon dioxide

ammonia + copper (II) oxide    →       copper + water + nitrogen

Answer 1

Each iron atom in Fe2O3 decreases its oxidation number from +3 to 0, so each Fe atom in Fe2O3 is reduced, and Fe2O3 is the oxidizing agent.