This lecture covers the fundamentals of acid-base chemistry within the context of equilibrium, as part of the "Introduction to Physical Chemistry II" series. This lecture is tailored for students with a foundational knowledge of general chemistry and physics, focusing on the macroscopic analysis of chemical systems. It aims to bridge the gap between general chemistry concepts of acids and bases and their behavior in equilibrium systems.

In this lecture, students will:
- Explore the Brønsted-Lowry concept of acids and bases, which defines acids as proton donors and bases as proton acceptors.
- Learn about conjugate acid-base pairs, illustrating how the donation and acceptance of a proton in a chemical reaction connect acids and bases in pairs.
- Understand the concept of polyprotic acids and how each proton donation step involves separate conjugate pairs.
- Discover the relationship between the strength of an acid or base and the strength of its conjugate counterpart.
- Investigate the autoionization of water, a key process in understanding the pH scale and the behavior of acids and bases in aqueous solutions.
- Apply the concepts of pH, pOH, and the equilibrium constant \(K_w\) to calculate the pH of strong acids and bases in solution.

Through practical examples and guided explanations, this lecture provides a comprehensive overview of acid-base chemistry in equilibrium, emphasizing the importance of conjugate acid-base pairs. It equips students with the analytical tools needed to predict the behavior of acids and bases in various chemical environments and prepares them for more advanced topics in physical chemistry.

For those interested in exploring the intersection of acid-base chemistry and equilibrium further, visit our course page: [https://www.darinulness.com/learning-...](https://www.darinulness.com/learning-....

Embrace "Acids, Bases, and Equilibrium: Understanding Conjugate Pairs" to deepen your understanding of this fundamental aspect of chemistry. Whether you're a student aiming to master physical chemistry or simply curious about the nuanced behaviors of acids and bases, this lecture offers valuable insights into the dynamic world of chemical equilibrium.