CH302H - Principles of Chemistry II: Honors
Spring 2016, Unique 49420

Lecture Summary, 3 March 2016

Acid - base equilibrium:  Today we started discussing the application of chemical equilibrium to the study of acids and bases.  We proposed two definitions of an acid and base, one based completely on interactions in water (Arrhenius) and one based on moving a proton from a reactant to product (Bronsted-Lowry).  Bronsted-Lowry is the more general definition, and so most of our discussion of acid-base chemistry will follow this definition.  No matter how we define the acid and the base, we can only understand the proton transfer by considering the molecules that are created after the proton has moved - i.e the conjugate base of the acid and the conjugate acid of the base.  The extent of proton transfer in our acid-base reaction will depend on the stability of the conjugate molecules thus created.