【摘要】 以Na2SO4为支持电解质,在P204+In2(SO4)3+n C8H18+Na2SO4+H2O体系中,在温度278.15～303.15K和离子强度0.1～2.0mol·kg-1范围内,测定了萃取平衡水相中铟浓度和pH值.应用直线外推法在计算机上通过EXCEL计算了萃取反应的标准平衡常数K0,并得到经验公式logK0=-26.3+4.87×103/T+4.77×10-2T,同时计算了萃取反应的其他热力学量.更多还原

【Abstract】 <Abstrcat> The equilibrium molalities of In³⁺ and pH in the aqueous phase were measured at ionic strengths from 0.1 to 2.0 mol/kg at temperatures from 278.15 K to 303.15 K with Na₂SO₄ as supporting electrolyte. The standard equilibrium constants K⁰ at various temperatures were calculated on EXCEL by means of straight-line extrapolation. The empirical formula were obtained: logK⁰=-26.3+4.87×10³/T+4.77×10^-2T. And the other thermodynamic quantities for the extraction process were calculated.更多还原