posted by jaji .
using the hasselbach-Handerson equation calculate the fraction of asprin Pka is 5.6 and PH is 8.6?
If you need more information on the equation, try some of the following links:
For the calculation itself, you might find something useful in some of the following:
Do you want the fraction [A-]/[HA] dissociated?
[Your value for the pKa for aspirin is low from memory =about 3.5??]
From the H-H equation
8.6=5.6 + log([A-]/[HA])
10^+3 = [A-]/[HA]