How to prepare a buffer solution: a triethanolamine buffer Shown here is the structure of...

How to prepare a buffer solution: a triethanolamine buffer Shown here is the structure of triethanolamine in its fully protonated form:

Its pKa is 7.8. You have available at your lab bench 0.1 M solutions of HCl, NaOH, and the uncharged (free base) form of triethanolamine, as well as ample distilled water. Describe the preparation of a 1 L solution of 0.05 M triethanolamine buffer, pH 7.6.