Chemists use LeChatelier's principle to reason qualitatively about the influence of changes in concentration, temperature or pressure on systems that are at equilibrium. This movie describes the hemoglobin scenario from a qualitative perspective.

We recommend you (i) watch the movie (ii) go through the course items that follow, and (iii) watch the Hemoglobin story again. Since the Hemoglobin story uses ideas covered in the library items, the first time you hear the story you may not yet have the background information needed to understand the details.

These tutorials are part of a set of equilibrium materials developed with the Open Learning Initiative at Carnegie Mellon University. To access the entire course, please see http://oli.web.cmu.edu/jcourse/webui/guest/look.do?section=buffers.