Khan Academy: Test Prep: Mcat: Chemical Processes: Bioenergenetics: An Analogy for Gibbs Free Energy

Sal continues his discussion of spontaneous reactions by setting up a reaction between two substances, and using the Gibbs Free Energy method to determine its spontaneity. This video is extremely heavy on the math, and it would be useful...

How does ATP provide energy for biosynthesis reactions? Use an understanding of Gibbs Free Energy to understand how ATP is coupled to energy-requiring processes. [7:41]

Explains what intramolecular and intermolecular forces are and the different types for each. Includes lots of examples.

Explains the concept of chirality and how it is applied in the development of pharmaceuticals.

Explains what chromatography is and how its principles are applied when separating mixtures.

Using an illustrated example, the difference between an endothermic and an exothermic reaction is described. The concept of enthalpy, or heat energy change, is explained, and the energy diagrams of reactions are presented.

Explains what a buffer is, how it is prepared, how it works to resist drastic changes in pH, and the characteristics of an effective buffer. Human blood also contains a buffer which is crucial for maintaining the blood's pH.

An exploration of aromatic stability as it relates to benzene. [5:59]

Explains what aromatic heterocycles are. [11:49]

Energy is neither created nor destroyed, but what about free energy? Where does that fit into thermodynamics? In the video, learners explore simple the spontaneous reaction examples of enthalpy, entropy, and temperature, and then apply...