| Summary: | The kinetics of -the peroxoclisulphate/formate reaction have been studied using four methods, (1) By titrating aliquots of reaction mixture,
(2) By following pH changes,
(3) By a manual pH-stat.
(4) By an automatic pH-stat,
Kinetic data was obtained at pH values from pH 4.0 to pH 8.0 at an ionic strength of 0.2M and at temperatures from 30° to 50°C, using method (4). Changes of rate constant with pH were considerable. Kintetic data at pH = 8.0, temperature = 35°C and ionic strength = 0.2M are, first order rate constant k₁ = 9.59 x 10-⁵ sec -¹, Ea = 11.9 Kcal mole -¹ PZ = 2.49 x 10⁴ sec -¹.
A mechanism is postulated to explain the observed kinetics for the uncatalysed reaction.
The kinetics of the cupric ion catalysed reaction were studied over a range of cupric ion concentrations from 2.5 x 10-⁴ to 6.25 x 10-⁴M at 30°C and pH 5.0 using method (4).
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