Bronsted-Lowry acids are defined as acids that serve as donors for hydrogen protons. Alternately, any base that receives hydrogen protons is called a Bronsted-Lowry base.
It is essential for a Bronsted-Lowry acid to contain one or more hydrogen atoms attached to an electronegative atom. When a Bronsted-Lowry acid transfers a hydrogen proton to another substance, the acid loses a portion of its charge. When the acid loses its charge by transferring protons to a base, it acts as a type of base itself, as it requires another substance to transfer protons to it to return its original charge. A Bronsted-Lowry base that has been given protons from a substance becomes a Bronsted-Lowry acid.