How do we get the base of iron oxide?
Okay, a metal oxide is a base. When a base reacts with an acid it produces a salt plus water and possibly hydrogen or carbon dioxide. There are four bases, metal oxides, metals, metal hydroxides (alkalis) and matal carbonates. Iron is a metal and you know from the name that it is an oxide. Metal oxide + Acid= Salt + Water + Hydrogen Metal oxide is the base.