How do you go about calculating the pH of a conjugate base of a polyprotic acid? How do you know which KA value to use in your calculation?
Thanks!
Polyprotic Acids
Moderators: Chem_Mod, Chem_Admin
-
Sarah_Hoffman_2H
- Posts: 104
- Joined: Wed Sep 30, 2020 9:54 pm
Re: Polyprotic Acids
In order to calculate Ka of a polyprotic acid you have to multiply both Ka values from the two deprotonation equations. Hope this helps!
-
Vince Li 2A
- Posts: 100
- Joined: Wed Sep 30, 2020 9:37 pm
Re: Polyprotic Acids
Polyprotic acids have extra protons that they are able to give off. Various polyprotic acids can either be strong or weak, but in order to calculate the total Ka, you have to multiply together the various Ka values from each of the equations parts to obtain the total Ka.
Return to “Acidity & Basicity Constants and The Conjugate Seesaw”
Who is online
Users browsing this forum: No registered users and 5 guests