Thermodynamic parameter ΔH°(KJ mol−1) ΔS°(J mol−1K−1) ΔG° (KJ mol−1) 293K 313K 333K Cephalexin -16.826 37.100 -5.982 -5.184 -4.499 Cefixime -9.8239 18.800 -4.297 -3.954 -3.544

Table 5: Change of thermodynamic parameters with temperature.