Educational resources about equilibriums and chemistry in general:
01: Rolf Sander
A huge table with Henry's constants at Rolf Sanders homepage
02: Yahoo directory
The yahoo directory about chemistry
General chemistry resources, which at some point has been evaluated by humans.
03: dmoz directory
The dmoz directory about chemistry
General chemistry resources, which at some point has been evaluated by humans.
04: Chemistry tutoring center at Towson University
A lot of useful chemistry resources by Liina Ladon.
05: The frontpage of beggiatoa