Purdue University - Acid-Base Pairs, Strength of Acids and Bases, and pH
Purdue University - Factors that Control the Relative Strengths of Acids and Bases
Great, comprehensive treatment of the strength of acids and bases.
Purdue University - pH, pOH, and KaPurdue University - Factors that Control the Relative Strengths of Acids and Bases
Nice discussion to help understanding of why some acids and bases are strong and others are weak.
Acids & Bases Resources
20 questions
figures for classroom presentation