Question

what is the percent ionization in a 0.15 M solution of HF?

Answer 1

HF is a weak monoprotic acid, \[\color{green}{K_a = 6.6 \times 10^{-4} \qquad \text{@ STAP}}\]
Write the equation for the partial dissociation of this acid and apply the equilibrium law expression. Fronm there, I hope you should be able to work out the answer.

Answer 2

(Set up an ICE chart. It will help.)

Answer 3

http://chemwiki.ucdavis.edu/Reference/Reference_Tables/Equilibrium_Constants/E1%3A_Acid_Dissociation_Constants_at_25%C2%B0C did you get that value from this?

Answer 4

I got my value from a different source (Lange's Handbook of Chemistry, 13th edition).
Use the value from your source if you want. It will not make that much of a difference.

Answer 5

thank you!