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069 - pH and Buffers

In this video Paul Andersen explains how buffer solutions maintain pH in a solution. A buffer solution is made up of a weak acid and its conjugate base. As strong acids or bases are added the pH remains stable. A good buffer solution has a pKa value equivalent to the pH and equal amounts of the weak acid and the conjugate base.

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Music Attribution
Title: String Theory
Artist: Herman Jolly
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All of the images are licensed under creative commons and public domain licensing:
→AzaToth. Myoglobin 3D Structure, February 5, 2008. self made based on PDB entry. http://commons.wikimedia.org/wiki/Fil....
File:Arginine.png, n.d. http://commons.wikimedia.org/wiki/Fil....
File:Aspartic Acid.png, n.d. http://commons.wikimedia.org/wiki/Fil....
"File:Blausen 0761 RedBloodCells.png." Wikipedia, the Free Encyclopedia. Accessed February 5, 2014. http://en.wikipedia.org/wiki/File:Bla....
"File:Bromothymol Blue Colors.jpg." Wikipedia, the Free Encyclopedia. Accessed February 15, 2014. http://en.wikipedia.org/wiki/File:Bro....
File:Glutamine2.png, n.d. http://commons.wikimedia.org/wiki/Fil....