Khan Academy: P H and P Ka Relationship for Buffers

Sal illustrates the all-important relationships between pKa and pKb in this chemistry video. This relationship is what determines whether an acid is considered to be "weak," or "strong." The mathematics behind figuring out these...

This tutorial demonstrates deriving the relationship between pKw, pH, and pOH. Calculating the pH or pOH of strong acids and bases. [14:49]

See some examples of calculating pH of 0.25 M solution of sodium acetate, and calculating the pH of 0.050 M solution of ammonium chloride. [14:15]

A video focusing on the Ka and Kb relationship. Explore the relationship of the pKa and pKb and the conjugate acids and bases with example problems. [14:33]

This video explores buffer system by using the example of the buffering that occurs in our body to get our blood at a particular pH. [6:19]

Find out about the Ka and Kb relationship and pKa and pKb relationship between conjugate acids and bases. [14:33]

Explains what a buffer is, how it is prepared, how it works to resist drastic changes in pH, and the characteristics of an effective buffer. Human blood also contains a buffer which is crucial for maintaining the blood's pH.

This site from the Department of Chemistry at the Washington University is an excellent site on how buffers are used in the human body and how they react to exercise.

This tutorial describes the effects of adding strong base or strong acid to water.

Read this passage and study the graph to complete the five-question quiz related to how the heart works including the relationship of pressure and volume.