Calculate the degree of ionization of acetic acid in solution 2. The degree of ionization of an acid = [H3O+]/[HA] where [H3O+] is the equilibrium concentration and [HA] is the original concentration of of the acid . [H3O+] can be determined from the measured pH.
Solution 2 . 10.0 mL of 0.1M HC2H3O2 + 10 mL H2O. Measured pH 3.31. To determine the [H3O+] account for the dilution effect of adding 10.0 mL of water, and use M1V1=M2V2