Hypoiodous acid, HIO, has an acid dissociation constant of Ka =2.3 x 10-11 .
a) What is the useful pH range of a buffer prepared fromhypoiodous acid and its conjugate base, hypoiodite?
b) Determine the pH of a solution prepared by mixing 25.0 mL of0.212 M hypoiodous acid with 30.0 mL of 0.126 M NaOH (you mayassume that the volumes of the solutions are additive).
c) What mass of HCl(g) can be added to the solution in part (b)before it is no longer a buffer? Ka (HCl) = 4.5x10^-7
