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+//Calculate the standard molar  Enthalpy of activation (delH),standard molar Entropy of activation (delS)and Standard molar Gibbs energy of activation (delG) for the reaction CH3NC(g)=CH3CN(g)
+
+//Example 12.2
+
+clc;
+
+clear;
+
+k=4.0*10^13;  //Pre exponential factor in s^-1
+
+KB=1.381*10^-23;  //Boltzman constant in J K^-1
+
+h=6.626*10^-34;  //Planck's constant in J s
+
+R=8.314;  //Gas constant in J K^-1 mol^-1
+
+T=300;  //Absolute temperature in K
+
+e=2.718;  //ln constant
+  
+delS=log((k*h)/(e*KB*T))*R;  // Standard molar Entropy in J K^-1 mol^-1
+ 
+printf("Standard molar Entropy = %.2f J K^-1 mol^-1",delS);
+
+Ea=272;  //Activation Energy in kJ mol^-1
+
+delH=Ea-(R*T/1000);  //Standard molar Enthalpy in kJ mol^-1
+
+printf("\n Standard molar Enthalpy = %.0f kJ mol^-1",delH);
+
+delG=delH-(T*delS/1000);  //Standard molar Gibbs energy in kJ mol^-1(The answer vary due to round off error)
+
+printf("\n Standard molar Gibbs Energy = %.3f kJ mol^-1",delG);