Reaction of Chromium(III) with 3,4-Dihydroxybenzoic Acid: Kinetics and Mechanism in Weak Acidic Aqueous Solutions

Figure 4

Typical pH versus time plot of 3,4-DHBA/Cr(III) mixtures at 313 K. Conditions: [3,4-DHBA]₀ = 1.62×10⁻²M, [Cr(III)]₀ = 2.50×10⁻³M, [KOH]=4.00×10⁻³M, I = 0.02 M.