When the radical process is occurring ... Solution B: Place 43 g of potassium iodate and approximately 800 mL distilled water in the second 2L beaker. Add 4.3 mL concentrated H2SO4 to this mixture.

or by a non-radical process when the I- concentration is high. Both processes reduce iodate to hypoiodous acid. The radical process forms hypoiodous acid at a much faster rate than the non-radical ...