Lecture 12: Buffers (Chapter 2)

LECTURE OVERVIEW:
In this lecture, we discuss the concept of buffers, focusing on their role in stabilizing pH when acids or bases are added to a solution. The lecture covers the qualitative description of buffers, emphasizing their ability to resist changes in pH. We also introduce the concept of buffer intensity, which quantifies the extent of pH change when an acid or base is introduced. Additionally, graphical methods for representing buffer intensity across different pH values are explored, with practical examples to demonstrate how buffers function in various environmental and chemical systems.

INTENDED LEARNING OUTCOMES:
By the end of the lecture, you will be able to:
• Understand the qualitative description of buffers
• Calculate buffer intensity for different scenarios
• Construct graphical representations of buffer intensity

RELEVANT READINGS:
• Water Chemistry, 2nd Edition, by Mark M. Benjamin
8. Titrations and Buffers
8.11. Buffers

---------------------------------------------------------------------------------------------------------------------------------
COURSE INFORMATION:
This video is part of the Environmental Chemistry course, designed and taught by Prof. Mim Rahimi. The course covers the following chapters: (1) Fundamentals of Environmental Chemistry, (2) Acids and Bases and Related Phenomena, (3) Chemistry of Metals, and (4) Redox Chemistry in Environmental Systems.

COURSE REFERENCES:
The recommended textbooks for the course are:
• Main Reference: Water Chemistry, 2nd Edition, by Mark M. Benjamin, Waveland Press Inc., ISBN: 978-1478623083
• Additional Useful Reference: Environmental Chemistry, 10th Edition, by Stanley E. Manahan, CRC Press, ISBN: 978-1032339726