Antioxidative Reactivity of L-Ascorbic Acid and D-Isoascorbic Acid Species towards Reduction of Hexachloroiridate (IV)

Table 2

Rate constants for the rate-determining steps at 25.0°C and 1.0 M ionic strength.

Reductant	km	Values (M^−1s^−1)
AA	k1	451 ± 59
	k2	(2.28 ± 0.05) × 10^7
	k3	Diffusion controlled
IAA	k1	487 ± 45
	k2	(1.19 ± 0.03) × 10^7
	k3	Diffusion controlled