Calculate the percent ionization of formic acid solutions having the following concentrations. A) 1.00 M B) 0.530 M C) 0.140M D) 5.30 x 10^-2 M

Part A) 1.00 M

Ka of formic acid = 1.77 x 10^-4

Percent of ionization = (Ka/C)^1/2 x100

                                  = (1.77 x 10^-4/1)^1/2 x100 = 1.33%

Part B) 0.530 M

Percent of ionization = (Ka/C)^1/2 x100

                                  = (1.77 x 10^-4/0.53)^1/2 x100 = 1.82 %               

Part C) 0.140 M

Percent of ionization = (Ka/C)^1/2 x100

                                  = (1.77 x 10^-4/0.14)^1/2 x100 = 3.55 %

Part D) 5.3 x 10^-2 M

Percent of ionization = (Ka/C)^1/2 x100

                                  = [(1.77 x 10^-4)/(5.3 x 10^-2 )]^1/2 x100 = 5.77 %