when 1 mol of water s vapourised at 100 degree celcius , the heat absorbed is 9710 .the delta s is [change in entropy ]

Vaporization of liquid leads to an increase in the degree of disorder or entropy. Entropy of vaporization is a measure of change in entropy during the process of vaporization. This entropy is positive. Entropy of vaporization ca be  calculated by the following formula.

Δs = ΔH /T

Molar heat of vaporization of water is 9710 cal/mol

Boiling point of water is 100 C =373K

Therefore Entropy of vaporization = 9710/373

                                                          =26.03 cal/mol/K