pH =
pH = -log [H+]
defined as the negative log of Hydrogen ion conc .
pH
normal pH
7.35-7.45
proton donors
Acids
proton acceptors
Bases
express the strengths of WA
pKa
pH below the pKa
more protonated
pH above the pKa
more unprotonated
•resist a change in PH when protons are produced or consumed
buffers
physiologic buffers
used to calculate the conc of weak acid [HA] and its conjugate base in aq soln
Henderson Hasselbach eqn