This in class activity consists of two demonstrations to be performed by the instructor, followed by a worksheet that students may work on independently or in groups.  The demonstrations allow the students to determine when a reaction has occured, when it has not occured, and generate qualitative reaction energy profiles to match these observations.  This activity is designed to take place during a description of kinetics in general chemistry. Detailed descriptions of the procedure and activity may be found in the "Overview for Instructor."

This activity is designed to be done in the middle of the typical first quarter/first semester general chemistry electronic structure unit. Students will be expected to have learned the following concepts prior to completing this activity:

a) how the four quantum numbers are determined (principal quantum number, angular momentum quantum number, magnetic quantum number, and electron spin quantum number);

b) the basic concept of electron spin, and how atomic orbitals that possess two electrons will result in the spin-paring of electrons;

This is a flipped classroom activity intended for use in a first semester general chemistry course.

In this in-class activity, each student calculates the inital pH, equivalence volume, and pH at the equivalence point for both a strong acid-strong base and a weak acid-strong base titration.

In addition, each student is assigned a unique volume before the equivalence point and a unique volume after the equivalence point for each titration curve.

The data from the class is then assembled in Excel to construct the two titration curves.