Acetic Acid is a weak acid whose acid dissociation constant (Ka) is 1.79 x 10^-5. Suppose that a 4% solution(by weight) of acetic acid (C2H4O2 or HOAc; molar mass= 60.02g/mol) in water is prepared. If the density of this solution is 1.005g/mL, what is the pH?
