What fraction of acetic acid is dissociated in a solution with a formal concentration of 0.0200 M acetic acid?

Question

If I added 100 mL of water to this solution, would I expect the fraction of dissociation to increase or decrease?

Answer 1

Degree of dissociation is given by root (Ka/concentration), so you can work this out.

If you dilute a weak acid, the degree of dissociation rises.