Kinetics and Mechanism of the Oxidation of Naphthol Green B by Peroxydisulphate Ion in Aqueous Acidic Medium

Figure 1

Plot of log 𝑘₂ versus 𝐼^1/2 for the redox reaction between naphthol green B and S₂O₈²⁻ at [NGB³⁻]=4.0×10⁻⁵ mol dm⁻³, [S₂O₈²⁻]=5.6×10⁻³ mol dm⁻³, [H⁺]=1.0×10⁻⁴ mol dm⁻³, 𝐼=0.05--0.7 mol dm⁻³, 𝜆 = 700 nm, and 𝑇=23±1°C.