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

Lecture Summary, 22 March 2016

Acid/base titrations:  A titration is an experimental procedure to determine an unknown quantity of an analyte of interest by adding a solution of known composition to the unknown solution.  This technique can be applied generally to any analyte. Today we discussed acid-base titrations, a procedure to determine the concentration of an unknown acidic or basic species dissolved up in solution.  We choose a strong acid or base of known composition as the titrant, the measure changes in pH as known amounts of the titrant are added.  The goal of the titration is to find the equivalence point, where the moles of the unknown acid (base) in solution equals the moles of the known titrant.  As we saw in class, it is important to carefully keep track of all species in the dominant equilibrium reaction, both by moles and concentration, in order to correctly interpret the results of the titration.

Also, there is some additional information about acids and bases in this week's CH108 worksheet