Table 2. Pseudo-First-Order Kinetic Constants along with Regression Values at Different Cr(VI) and H₂O₂ Concentrations^a.

parameters		k1 (min–1)	R2
Cr(VI)	1 mM	0.039 ± 0.001	0.9893
	2 mM	0.049 ± 0.002	0.9808
	3 mM	0.076 ± 0.003	0.9974
	5 mM	0.062 ± 0.003	0.9066
	7 mM	0.032 ± 0.001	0.9652
H2O2	7.8 mM	0.032 ± 0.001	0.9848
	11.64 mM	0.039 ± 0.001	0.9771
	15.52 mM	0.051 ± 0.002	0.9779
	19.4 mM	0.098 ± 0.004	0.9011
	23.28 mM	0.042 ± 0.001	0.9636
	27.16 mM	0.032 ± 0.001	0.9390

^aWhen the Cr(VI) and H₂O₂ concentrations were varied, respectively, other parameters were held constant: pH = 6, temperature = 298 K, [MB] = 15.7 μM, [Cr(VI)] = 3 mM, and [H₂O₂] = 19.4 mM.