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5.111 Principles of Chemical Science

5.111 Principles of Chemical Science (Fall 2014, MIT OCW). Instructor: Professor Catherine Drennan. This course provides an introduction to the chemistry of biological, inorganic, and organic molecules. The emphasis is on basic principles of atomic and molecular electronic structure, thermodynamics, acid-base and redox equilibria, chemical kinetics, and catalysis. One year of high school chemistry is the expected background for this freshman-level course.

Lecture 22 - Acid-Base Equilibrium: Salt Solutions and Buffers. A buffer helps to maintain a constant pH. Our blood has a natural buffering system to ensure that the pH of our blood stays within a narrow window and that we stay health. In this lecture, we consider how to design a buffer. We also discuss how one can predict the pH of a salt solution. At dinner if you put table salt in your water glass, how would the pH of the water change? or would it change? (from ocw.mit.edu)

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