Table 6. Apparent Thermodynamic Parameters for Dissolution Behavior of MET·HCl in Three Binary Solvents at Thm.
| ΔG (kJ·mol–1) | ΔH (kJ·mol–1) | ΔS (J·K–1·mol–1) | TΔS (kJ·mol–1) | % ζH | % ζTS | ||
|---|---|---|---|---|---|---|---|
| Water + DMF | |||||||
| 0.30 | 12.19 | 13.56 | 4.508 | 1.364 | 90.86 | 9.143 | |
| 0.40 | 11.27 | 13.71 | 8.065 | 2.440 | 84.89 | 15.11 | |
| 0.50 | 10.46 | 15.05 | 15.19 | 4.598 | 76.60 | 23.40 | |
| 0.60 | 9.730 | 16.09 | 21.02 | 6.361 | 71.67 | 28.33 | |
| 0.70 | 9.075 | 15.90 | 22.57 | 6.830 | 69.96 | 30.04 | |
| 0.80 | 8.652 | 15.94 | 24.09 | 7.289 | 68.62 | 31.38 | |
| 0.90 | 7.984 | 15.31 | 24.21 | 7.327 | 67.63 | 32.37 | |
| 1.00 | 7.685 | 16.06 | 27.68 | 8.375 | 65.73 | 34.27 | |
| Water + Acetonitrile | |||||||
| 0.30 | 13.19 | 14.33 | 3.739 | 1.131 | 92.68 | 7.319 | |
| 0.40 | 11.34 | 16.09 | 15.71 | 4.753 | 77.20 | 22.80 | |
| 0.50 | 10.17 | 19.74 | 31.64 | 9.575 | 67.34 | 32.66 | |
| 0.60 | 9.182 | 15.47 | 20.78 | 6.288 | 71.10 | 28.90 | |
| 0.70 | 8.499 | 14.71 | 20.53 | 6.212 | 70.31 | 29.69 | |
| 0.80 | 8.195 | 15.27 | 23.38 | 7.076 | 68.34 | 31.66 | |
| 0.90 | 7.732 | 15.59 | 25.96 | 7.856 | 66.49 | 33.51 | |
| 1.00 | 7.685 | 16.06 | 27.68 | 8.375 | 65.73 | 34.27 | |
| Water + n-Propanol | |||||||
| 0.30 | 12.92 | 25.24 | 40.71 | 12.32 | 67.20 | 32.80 | |
| 0.40 | 11.53 | 22.82 | 37.29 | 11.28 | 66.91 | 33.09 | |
| 0.50 | 10.42 | 22.42 | 39.65 | 12.00 | 65.14 | 34.86 | |
| 0.60 | 9.550 | 21.14 | 38.32 | 11.59 | 64.58 | 35.42 | |
| 0.70 | 8.829 | 19.51 | 35.30 | 10.68 | 64.62 | 35.38 | |
| 0.80 | 8.453 | 18.98 | 34.79 | 10.53 | 64.32 | 35.68 | |
| 0.90 | 7.845 | 18.02 | 33.63 | 10.18 | 63.91 | 36.09 | |
| 1.00 | 7.685 | 16.06 | 27.68 | 8.375 | 65.73 | 34.27 | |