Conversely, it acts as a base when it reacts with an acid. Even the Br nsted model is naive. The reaction between HCl and water provides the basis for understanding the definitions of a Br nsted acid and a Br nsted base. As a result, Br nsted acids are known as either hydrogen-ion donors or proton donors . Br nsted bases are hydrogen-ion acceptors or proton acceptors .
Acids can be neutral molecules.
They can also be positive ions or negative ions. The Br nsted theory therefore expands the number of potential acids. It also allows us to decide which compounds are acids from their chemical formulas. Br nsted bases can be identified from their Lewis structures. According to the Br nsted model, a base is any ion or molecule that can accept a proton.