H2O(S) at 0oC to H2O(l) at 0oCÂ Â Â Â
-------delta S1
H2O(l) at 0oC to H2O(l) at 100 oC ---------delta S2
H2O(l) at 100 oC to H2O(g) at 100 oC ---------delta S3
delta S1 = qrev/T = n*delta H fusion / T
                   Â
=1*6.01/273.15
                   Â
=0.022 KJ/K
delta S2 = nCp*ln(Tf/Ti)
          Â
= 1* 0.07529*ln(373.15/273.15)
          Â
= 0.0235 KJ/K
delta S3 = n*delta Hvap/T
          Â
= 1*40.7 / 373.15
          Â
=0.1091 KJ/K
So,
delta S= delta S1 + delta S2 + delta S3
        = 0.022 + 0.0235+
0.1091
        = 0.1546
KJ/K
        = 154.6
J/K
