Ac is acetate and HAc is acetic acid
.......Ac + H^+ ==> HAc
I....0.58...0........0.68
add........0.02...........
C...-0.02..-0.02......+0.02
E.....0.56...0.........0.70
Plug the E line into the HH equation and solve for pH.
What is the pH of a buffer solution that has CH3CO2H=0.68 M and CH3CO2- =0.58 M, and has 0.01 M concentration of H2SO4 added to it? Ka of acetic acid is 1.8x10-5
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