The effect of magnetic field on the rate constant of reaction for potassium ferricyanide with ascorbic acid has been studied within the temperature range of 298.15～313.15K.The results show that the rate constant of reaction for potassium ferricyanide with ascorbic acid is evidently increased under the optimum magnetic field.The decreasing values of activation enthalpy and entropy are 12.74kJ*mol-1 and 38.99J*mol-1*k-1.The cause of the effect of magnetic field on the reaction rate of potassium ferricyanide with ascorbic acid was discussed.
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