Ionization

... halirous, alextemplet. to be honest, i like it!!! :D it's because we put certain chemicals to the solution. the attraction (electronegatifity, ionization, etc) between those compound starts the reaction. and the energy within them allow it to react. hehe... yup! alchemy has the answer for it!!!

See entire post

... pH – pKa3 = log[gamma-COO-]/[gamma-COOH] What you should find is that two out of three of these equilibria heavily favor one of the ionization states, while the other has a significant proportion of both ionization states.

See entire post

... just do the arithematic, saving Henderson-Hasselbach for questions about "% ionized" or "fraction of sample in some or the other ionization state" etc. Sorry, you do have the complete Henderson-Hasselbach equation there. I didn't look at the formulae carefully enough. As ...

See entire post

Last one for a bit I hope. I need to find the two main ionization states of histidine at pH of 5.0, and the percent of ea present. My approach is this: pKa of COOH is 1.82, pKa of H3N+ is 9.17. Ph= pKa + log [coo-]/[cooh], 5.0 = 1.82 log [A-]/[HA], ...

See entire post

... it says "answers all your questions", I can post even a stupid biochemistry 101 question. So, how can I define amino acids in termsof ionization? Of course I can talk about pH, pK etc., but they are never unionized, even as solids; if I start with "dipolar ions"; they aren't ...

See entire post