Brønsted Acids and Bases: Acids are proton donors, bases are proton acceptors. The reaction shows a base accepting a proton from an acid, forming a conjugate acid and conjugate base.
Diagram illustrating Brønsted Acids and Bases, showing a base (ethylamine anion) accepting a proton from an acid (ethanol), forming a conjugate acid and conjugate base, with labels for each component.