S.No %  of solvent ΔH° (kJ/mol.)
Methanol- H2O* Ethanol-H2O 1-propanol-H2O 2-propanol-H2O
1 0 -2.325 ± 0.16 -3.167 ± 0.02 -2.574 ± 0.02 -2.503 ± 0.06
2 1 -2.061 ± 0.13 -3.023 ± 0.06 -1.776 ± 0.09 -3.824 ± 0.03
3 2 -2.516 ± 0.20 -3.449 ± 0.03 -2.503 ± 0.03 -2.833 ± 0.02
4 3 -2.326 ± 0.16 -3.005 ± 0.04 -3.527 ± 0.07 -2.625 ± 0.04
5 4 -3.048 ± 0.18 -1.006 ± 0.01 -1.092 ± 0.04 -2.822 ± 0.01
6 5 -1.961 ± 0.56 -1.092 ± 0.03 -0.957 ± 0.07 -3.001 ± 0.02
7 6 -3.403 ± 0.01 -0.921 ± 0.02 -0.850 ± 0.01 -0.623 ± 0.05
8 10 -2.869 ± 0.09 -0.582 ± 0.04 -2.508 ± 0.04 2.561 ± 0.03
9 15 -2.385 ± 0.18 -0.327 ± 0.01 -5.008 ± 0.01 0.450 ± 0.07
10 20 -1.861 ± 0.02 -1.234 ± 0.01 -2.199 ± 0.05 -0.616 ± 0.01
11 25 -7.595 ± 0.16 -2.716 ± 0.02 -2.709 ± 0.06 -1.638 ± 0.02
*328 ± 1K in case of methanol
Table 6: Effect of mixed solvent systems on ΔH° of Ca(OH)2 at 293 ± 1K and 343 ± 1K.