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diff --git a/3689/CH9/EX9.2/9_2.sce b/3689/CH9/EX9.2/9_2.sce
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+////
+//Variable Declaration
+nb = 5.00      //Number of moles of Benzene, mol
+nt = 3.25      //Number of moles of Toluene, mol
+T = 298.15     //Temperature, K
+P = 1.0        //Pressure, bar
+R = 8.314      //Ideal Gas Constant, J/(mol.K)
+
+//Calculations
+n = nb + nt
+xb = nb/n
+xt = 1. - xb
+dGmix = n*R*T*(xb*log(xb)+xt*log(xt))
+dSmix = -n*R*(xb*log(xb)+xt*log(xt))
+
+//Results
+printf("\n Gibbs energy change of mixing is %4.3e J",dGmix)
+
+printf("\n Gibbs energy change of mixing is < 0, hence the mixing is spontaneous')
+printf("\n Entropy change of mixing is %4.2f J/K",dSmix)
+