Citric acid: monoprotic or triprotic? (1 Viewer)

[zemaj]

I keep getting conflicting answers... I need to know for the citric acid content in orange juice...

thanks

-zem

 

[McLake]

99% sure its triprotic ...

 

[zemaj]

Hmmm.... yeah. I think so too, now looking @ some more stuff.

BTW - anyone know how to solve the problem with citric acid being filtered out in the pulp?

-zem

 

[BlackJack]

Citirc acid is definitely triprotic, structure is like, from memory:
....H
....|
H-C-O-H
....|
H-C-O-H
....|
H-C-O-H
....|
....H

hmmm... systematic name in 1,2,3-tricarboxylic acid

 

[McLake]

Originally posted by BlackJack
systematic name in 1,2,3-tricarboxylic acid

No it's: 2-hydroxypropane-1,2,3-tricarboxylic acid

 

[BlackJack]

Hmmm... you're right. I have no idea why they repeat the OH nomenclature...

 

[Ozz^E]

triprotic for sure...three moles of NaOH are required to react with each mol of citric acid.