This project was preformed to supply Libretext authors with videos on General Chemistry topics which can be used to enhance their projects. Also, these videos are meant to act as a learning resource for all General Chemistry students . Video Topics When trying to make a buffer of a specific pH or when looking at the change of pH during the addition of H 3 O + or - OH to a buffer solution use the Henderson Hasselbalch equation. pH = pK a + Log [{CB}/{A}] A = Acid CB = Conjugate Base This video contains examples where the Henderson Hasselbalch equation is used to calculate the pH of a buffer solution. Link to Video Using the Henderson Hasselbalch Equation: https://youtu.be/kGQDtZfletg Attribution Prof. Steven Farmer ( Sonoma State University )