Abstract
The hydrolysis of phosphate esters is one of the most fundamental chemical and biochemical reaction. The kinetic solvent effect on the hydrolysis of mono-3, 5-dimethylaniline phosphate has been studied in aqueous mixtures of varying compositions (0-40% v/v) of some protic and aprotic solvents at four different temperatures. The rate of reactions increases with increasing proportion of solvents. Activation parameters (Ea, ΔH≠, ΔG≠, -ΔS≠) have been evaluated. The significance of these parameters have been explained on the basis of solvent-solute interaction, solvent of the transition state of the medium.
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