The purpose of this article is to suggest a number of possible laboratory investigations of the chemistry of phosphoric acid and its sodium salts involving potentiometric titration studies and thermochemical studies.

The purpose of this paper is to present experimental and theoretical information that can serve as source material for those interested in developing an experiment involving the study of interaction.

The purpose of this paper is to represent experimental data and the interpretation of the data as source material for interested individuals who might wish to develop their own experiments on interactions in chemical systems, defined as the deviation of any property of a system from ideality.

This investigation introduces the student to several important areas of thermochemistry, including enthalpies of neutralization, enthalpies of dissolution, enthalpies of formation, and Hess' Law.