Simultaneous determination of kinetic and thermodynamic parameters from fast-reaction kinetic measurements.
A combined stopped-flow temperature-jump apparatus interfaced with a dedicated microcomputer has been used to study the complexation reaction of iron(III) with thiocyanate in aqueous solution. Kinetic rate-constants (k(f) = 143 l.mole(-1) .sec(-1) from T-jump, k(f) = 150 l.mole(-1) .sec(-1) from stopped flow), equilibrium constants (K = 143 from T-jump, K = 150 from stopped flow) and the thermodynamic enthalpy change (DeltaH(c) = -6.7 kJ/mole) could be independently determined from the simultaneous application of the two techniques.
Trimm
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HH
Chemistry Department, Clarkson College of Technology, Potsdam, NY 13676, U.S.A.
Ushio
H
H
Patel
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RC