posted by Audrey .
What is the value of [OH-] in a 0.015 M CH3COOH solution? Ka = 1.8 x 10-5
I started by writing the equation:
CH3COOH + H2O <---> H3O+ + CH3COO-
Ka= [H3O+][CH3COO-]/[CH3COOH]= 1.8 E-5
... Now what? I don't understand where OH relates to this ...