The videos below provide a brief review of acid and base concepts that you likely studied in high school. Sections 0.1-0.6 delve deeper into each of these topics and provide practice questions. If you already have a background in acid-base chemistry, you can skip these videos for now and come back to them if you run into troubles when solving practice problems.
Introduction to Ka, Kb and Kw
Introduction to pH and pOH
Introduction to pKa
pH of a Strong Acid Solution
pH of a Strong Base Solution
pH of a Strong Acid Mixed with a Strong Base
pH of a Weak Acid Solution
pH of a Weak Base Solution
Buffers and the Henderson-Hasselbalch Equation
pH When a Weak Acid and Weak Base are Mixed
Note: The concentrations of [HCOOH] and [HCOO-] are incorrect on the right side (as seen in the thumbnail). The correct values are [HCOOH]=5M and [HCOO-]=2.5M. This does not affect the overall solution because the ratios of the correct and incorrect concentrations are the same in the Henderson-Hasselbalch equation.
pH When a Weak Acid and Strong Base are Mixed
pH When a Weak Base and Strong Acid are Mixed
pH of a Buffer after Strong Acid Addition
Equimolar Strong Acid Mixed with Weak Base
pH of a Salt Solution