INFLUENCE OF PRESSURE ON EXCESS THERMODYNAMIC CHARACTERISTICS OF WATER + ETHYLENEDIAMINE MIXTURE

The variations of excess molar thermodynamic characteristics: Gibbs en-ergy ΔP0→PGmE, entropy ΔP0→PSmE and enthalpy ΔP0→PHmE for the mixture of water + eth-ylenediamine in the temperature range of 288.15-323.15 K and pressures increase up to 100 MPa were calculated. Concentration dependences of ΔP0→PGmE, ΔP0→PSmE и ΔP0→PHmE versus mole fraction of ethylenediamine (x2) at all values of pressure studied were characterized by the presence of maxima. A correlation of the mixture melting diagram and change in excess molar entropy from concentration ( Po→pSmE=f(x2)) was found.

Key words: water, ethylenediamine, non-electrolytes mixtures, high pressure, excess thermody-namic parameters

2016, Т. 59, № 2, Стр. 13-18

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