pKa versus pKb versus Ka versus Kb  [ENDORSED]

Moderators: Chem_Mod, Chem_Admin

Jane Burgan 1C
Posts: 73
Joined: Fri Sep 28, 2018 12:15 am

pKa versus pKb versus Ka versus Kb

Postby Jane Burgan 1C » Thu Dec 06, 2018 11:46 pm

what is the difference between pKa, pKb, Ka, and Kb?

Nikki Bych 1I
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

Re: pKa versus pKb versus Ka versus Kb  [ENDORSED]

Postby Nikki Bych 1I » Fri Dec 07, 2018 12:35 am

Ka-- acidity
Kb--bacisity
In an such as equation AH + H2O => H3O+ + A-, Ka=products/reactants, and measures the extent to which an acid dissociates in solution (same for Kb but with a basic equation).
p means -log( ).

305117729
Posts: 30
Joined: Fri Sep 28, 2018 12:16 am

Re: pKa versus pKb versus Ka versus Kb

Postby 305117729 » Fri Dec 07, 2018 9:47 pm

Ka is the indicator of strength of an acid, the greater it is the stronger the acid will be.
pKa = -log[Ka] so the greater pKa is the weaker the acid will be.
Kb and pKb work the same way but for bases.


Return to “Calculating pH or pOH for Strong & Weak Acids & Bases”

Who is online

Users browsing this forum: No registered users and 1 guest