A weak acid, HA, has an ionization constant of 9.29 x 10-6. If we prepare a solution that is 0.727 M in HA what percent of the acid will be ionized?

Answer 1

HA>>H + A

do the ice
(Moles-x) x x

9.29E-6= x^2/(.727-x)

now multiply this out, it is a quadratic, use the quadratic equation. Solve for x

percent ionized= x/.727 * 100