Kinetics and Mechanism of the Reaction between Chromium(III) and 2,3-Dihydroxybenzoic Acid in Weak Acidic Aqueous Solutions

Figure 7

(a) pH=𝑓(𝑡) for the reaction between 2,3-DHBA and Cr(III) in aqueous solutions. Conditions: [2,3-DHBA]₀ = 0.01 M, [Cr(III)]₀=0.10 M, [KOH]₀ = 0.1 M (stock solution added in the mixture), and 𝑇= 298 K. (b) pH =𝑓(𝑡) of a blank sample. Conditions [Cr(III)]₀=0.1M, and 𝑇=298 K.

(a)

(b)