1. The problem statement, all variables and given/known data Supposed to rank a bunch of titrations in order of pH; Here is one of the many... 200.0 mL of 0.100 M (C2H5)2NH (Kb = 1.3 x 10-3) by 0.100 M HCl 2. Relevant equations Henderson–Hasselbalch equation? 3. The attempt at a solution I don't even know where to start, I'm trying to help a friend (obv. doing a great job). If someone could help do this one I think I'll remember how to do these questions.