Oxidation of Bromide by Tert‐Butyl Hypochlorite |
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Authors: | Cristina Pastoriza Juan Manuel Antelo Juan Crugeiras |
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Institution: | Departamento de Química Física, Facultad de Química, Universidad de Santiago de Compostela, , 15782 La Coru?a, Spain |
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Abstract: | The kinetics of the oxidation reaction of bromide by tert‐butyl hypochlorite (tBuOCl) was studied at 25°C, ionic strength 0.5 M, and under isolation conditions. A stopped‐flow spectrophotometer was employed for monitoring the reactions. Kinetic studies show that the reaction is first order with respect to Br?] and tBuOCl]. Linear dependences of the proton concentration, in perchloric acid medium, and the buffer solution concentration were found on the rate constant. The activation parameters were calculated using the Arrhenius and Eyring equations from the kinetic studies performed to analyze the influence of temperature on the rate constant. The results are consistent with a reaction mechanism of general acid catalysis. The catalytic constants were obtained for the oxidation of bromide by tert‐butyl hypochlorite. The slope obtained for the Brönsted relationship was 0.36. |
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