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...

In this video Paul Andersen explains how acid-base chemistry can be understood in terms of equilibrium. Water is present in all acid-base chemistry and is amphoteric in nature. The Ka and Kb values can be used to determine the strength...

We've all heard the terms acid and base. What do these mean? Don't just tell me about pH, silly. What structural detail makes a molecule an acid or a base? You don't know? Well, you'd better watch this then. You don't want to be...

pH Effects on Amino Acid Structures

The Acid-DIssociation Constant (Ka) and pKa

Practice REAL problems from actual past IIT/JEE exams with Professor Dave!

For this one we will need to understand the basics about Bronsted-Lowry acid-base reactions, and we also should be able to gauge the stability of various potential conjugate bases.

Acids! Bases! Conjugate acids! Conjugate bases! We definitely have to be able to label such things, and we should also know how to state which direction in an acid-base equilibrium is preferred. To do this we should know how to tell...

Proof that pH=pKa when conjugate acid and base concentrations are equal; proof that conjugate acid and base concentrations are equal when pH=pKa

Titration Curves: A Conceptual Math-based Approach