Class Lecture Notes for CHEM 21A at El Camino Community College

The following documents are lecture materials for Chapter 9 that will be used in class. Please download them and bring them to class.


  • Chapter 9, section 9.1 and 9.3 - The Arrhenius Theory and Naming Acids and Bases
  • Chapter 9, sections 9.2 - The Bronsted-Lowry Theory
  • Chapter 9, section 9.4 - The Self-Ionization of Water
  • Chapter 9, section 9.5 - The pH concept
  • Chapter 9, sections 9.6, 9.7,and 9.8 - Properties of Acids, Bases, and Salts
  • Chapter 9, section 9.9 - Strengths of Acids and Base
  • Chapter 9, section 9.10 and 9.11 - Titration Calculations
  • Chapter 9, section 9.13 - Buffers