Kinetics and Mechanism of the Reaction between Chromium(III) and 3,4-Dihydroxy-Phenyl-Propenoic Acid (Caffeic Acid) in Weak Acidic Aqueous Solutions

Figure 2

A typical nonlinear plot of ln(𝐴_∞−𝐴_𝑡) versus time. Conditions: [caffeic acid]₀ = 0.01 M, [Cr(III)]₀ = 0.08 M, 1 cm cell, 𝑇 = 303 K, 𝐼 = 0.5 M.