All Questions
4
questions
2
votes
0
answers
40
views
Is the amine nitrogen of methylglycinediacetic acid (MGDA) protonated?
MGDA is a tertiary amine with 3 acetic acid groups. I would like to know whether the amine Nitrogen of MGDA is protonated or not for a given pH value. I could not find any literature data which ...
- 29
10
votes
1
answer
422
views
Experimental evidence for zwitterions
If I have a diprotic acid that is +1 positively charged in its fully protonated state, I can figure out the apparent equilibrium constants by titration with base. The net charge will be neutral after ...
- 41.2k
0
votes
0
answers
163
views
Formulation solubility?
Creatine is a popular sports/fitness supplement, generally sold as a powder to be mixed with water (usually like 5-10g creatine per serving). However, it is not very "soluble" in water -- barely 13.3g/...
- 1,556
6
votes
1
answer
2k
views
Zwitterion (amino acid) equilibrium and the equilibrium constant
I just had my biology test paper back from my teacher, and my teacher insisted that when functioning as a buffer in an alkaline solution, the amino acid deprotonates by the ammonium group instead of ...
- 668