clear; //clc(); // Example 6.7 // Page: 117 printf("Example-6.7 Page no.-117\n\n"); //***Data***// x_sulph = 0.6; x_water = 0.4; Temp = 200;//[F] // In the given figure 6.8 in the book, drawing the tangent to the 200F curve at 60 wt% H2SO4, we find that it intersects the 0%(pure water) axis at 25 Btu/lbm, and the 100% H2SO4 axis at -100Btu/lbm. i.e. h_water_per_pound = 25;//[Btu/lbm] h_sulph_per_pound = -100;//[Btu/lbm] // also molecular weight of water and sulphuric acid are M_water = 18;//[lbm/lbmol] M_sulph = 98;//[lbm/lbmol] // Using equation 6.20 given in the book we have h_water = h_water_per_pound*M_water;//[Btu/lbmol] h_sulph = h_sulph_per_pound*M_sulph;//[Btu/lbmol] printf("Partial molar enthalpy of water in the mixture is %f Btu/lbmol\n",h_water); printf(" Partial molar enthalpy of H2SO4 in the mixture is %f Btu/lbmol",h_sulph);