Table 5: Activation parameters of theophylline in different PEG media.

Type of PEGPEG % (V/V) at 300 K Equation # # # J/Kmol
kJ/mol

PEG-2000.50.39 0.99311.866.1181
1.00.49 0.99321.975.0177
2.00.51 0.98423.475.0172
3.00.53 0.96427.874.9157
4.00.56 0.99529.874.8150
5.00.65 0.98431.774.3142

PEG-3000.50.23 0.95243.176.7112
1.00.30 0.99236.076.2134
2.00.37 0.97931.175.5148
3.00.39 0.97030.475.4150
4.00.44 0.96927.375.3160
5.00.51 0.99825.575.0165

PEG-4000.50.16 0.99543.677.8114
1.00.25 0.99932.376.7148
2.00.28 0.98634.076.3141
3.00.30 0.98835.176.2137
4.00.32 0.97836.975.9130
5.00.44 0.99326.475.3163

PEG-6000.50.11 0.95640.278.6128
1.00.21 0.95327.077.1167
2.00.25 0.98125.976.6169
3.00.35 0.97917.675.8194
4.00.44 0.98013.068.8186
5.00.60 0.9586.3356.4167