What is pKa and pKb ?


pKa definition: pKa is the negative base-10 logarithm of the acid dissociation constant of a solution.
pKa = -log10Ka
The lower the pKa value, the stronger the acid.

pKb definition: pKb is the negative base-10 logarithm of the base dissociation constant of a solution.
pKb = -log10Kb
The lower the pKb value, the stronger the base.