To understand the differences between the three definitions of Acids and Bases Identify acids, bases, and conjugate acid-base pairs according to the three definitions of Acids and Bases To understand the concept of conjugate acid–base pairs in acid/base reactions Write the equation for the proton transfer reaction involving a Brønsted-Lowry acid or base, and show how it can be interpreted as an electron-pair transfer reaction, clearly identifying the donor and acceptor. Give an example of a Lewis acid-base reaction that does not involve protons.