THE CALCULATION OF THERMODYNAMIC-EQUILIBR IUM CONSTANT IN CUSO4-AMINATE P-507-N-C6H14 SYSTEM

The thermodynamic equilibrium model of acidic phosphoric extractant an d metal system was studied with thermodynamic method. The activity coe fficients of the components such as water, C6H14, extractant in organi c phase can be calculated according to the thermodynamic relation, and gamma(Cu)(2+) can be estimated according to Pitzer's equation. The ex perimental data can be used to correlate and solved on computer. The r esults showed that the thermodynamic equilibrium constant K was in the range of 1.62 x 10(-7)similar to 5.26 x 10(-7) and the activity coeff icients of the components were achieved.