FLOW MICROCALORIMETRIC STUDY OF THE 1-1 STOICHIOMETRIC REACTION

A new mathematical treatment is presented for determination of the enthalpy change and equilibrium constant for the 1:1 stoichiometric reaction using flow microcalorimetric data. A reaction for which the thermodynamic parameters are known has been carried out in order to demonstrate the applicability of the method. The advantage of the proposed method is that the thermodynamic values are calculated directly by solving a biquadratic equation involving only measured experimental quantities, with no initial estimates being required. A dilution cell has been incorporated in the experimental set-up so that the concentration of one of the reactants could be varied continuously. It is also shown that the volume of the dilution cell may be directly determined with a flow microcalorimetric experiment.