${10}^2\left[{\text{IO}}_4^{-}\right]$

(mol・dm⁻³)

10⁴k_obs (s⁻¹)

pH = 3.40

pH = 3.72

pH = 4.05

pH = 4.27

pH = 4.45

0.5

0.66

0.83

1.20

1.66

3.60

1.0

0.88

1.51

2.96

5.51

-

1.5

1.20

2.28

4.14

6.4

8.45

2.0

1.58

2.66

5.65

10.51

12.16

3.0

2.95

4.01

8.31

15.5

19.01

4.0

4.16

5.66

9.86

19.03

22.56

5.0

5.00

7.58

12.75

23.68

31.20