I can find pKa tables but have yet to see a comprehensive pKb chart. I'm trying to get an idea of the strength of various bases so I can use them as references. For acids, I know that acetic acid pKa = 4.6, H2SO4 pKa = -3, HI pKa = -10, trifluoromethanesulfonic acid pKa = 16 etc. so I can use them as references in my head but I have no numbers for the bases I know of. For example, I don't know if sodium amide is a stronger base than sodium methoxide or if lithium hydride is stronger than tert-butyllithium. Also if I'm not mistaken, the strongest acid known to man is fluoroantimonic acid. Whats the strongest known base?