Ka/b and pKa/b relationship

Moderators: Chem_Mod, Chem_Admin

Jose Torres
Posts: 31
Joined: Fri Sep 28, 2018 12:22 am

Ka/b and pKa/b relationship

Postby Jose Torres » Mon Mar 11, 2019 10:55 pm

What is the relationship between Ka and pKb? Does pKb go down if Ka goes up? Also, what pKa and Ka produce a strong conjugate base?

Jordan Lo 2A
Posts: 85
Joined: Fri Sep 28, 2018 12:25 am

Re: Ka/b and pKa/b relationship

Postby Jordan Lo 2A » Mon Mar 11, 2019 10:58 pm

pKa and pKb are the -log of Ka and Kb. As the exponent of the K becomes more negative, pKa or b increases

Alysa Rallistan 2G
Posts: 32
Joined: Thu Jan 17, 2019 12:16 am

Re: Ka/b and pKa/b relationship

Postby Alysa Rallistan 2G » Mon Mar 11, 2019 11:25 pm

It's better to remember the relation between Ka and pKa (vice versa with Kb) but the smaller the value of Ka, then the larger the value of pKa and thus the weaker the acid, if a weak acid has a small Ka value it's conjugate base will have a large Kb value


Return to “Equilibrium Constants & Calculating Concentrations”

Who is online

Users browsing this forum: No registered users and 1 guest