According to Bronsted-Lowry, a base is a solution that behaves as a proton acceptor, and these protons are in the form of a hydrogen (H+) ion. A base is a species that is capable of accepting a proton, which requires a lone pair of electrons to bond to the H+.
A Bronsted-Lowry acid is a species which is capable of donating a proton or a hydrogen ion (H+).
