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用C80微热量仪测定了298.15K时斯蒂芬酸(TNR)在溶剂乙醇(EtOH)中溶解焓及热动力学行为。得到了描述该物质溶解焓(ΔsolH)的经验公式。该公式为:ΔsolH=30.108+4756.04b-616.619b1/2,并由此得到了该物质的标准摩尔溶解焓、相对表观摩尔焓、相对偏摩尔焓以及配合物的稀释焓的经验公式。溶液反应的动力学方程为:γ=-6.60613+0.5678x,由此得到了该溶解反应的速率常数及反应级数:n=0.56875;k=1.94×10-3s-1。
The enthalpies of enthalpy and thermokinetics of Stephenic acid (TNR) in EtOH at 298.15K were determined by C80 microcalorimeter. An empirical formula describing the enthalpy of solution (ΔsolH) was obtained. The formula is: ΔsolH = 30.108 + 4756.04b-616.619b1 / 2, and the empirical formula of the standard molar enthalpy of solution, the relative molar enthalpy of mol, the relative partial molar enthalpy and the enthalpy of formation of the complex are obtained. The kinetic equation of the solution reaction is: γ = -6.60613 + 0.5678x, thus the rate constant and reaction order of the dissolution reaction are obtained: n = 0.56875; k = 1.94 × 10-3s-1.