Boiling point of ethanol is `78.4 ^(@) C ` .
Change in enthalpy during vaporisation of ethanol is `96 J * mol^(-1)` . Calculate the change in entropy of vaporisation of ethanol .

(i) State the second law of thermodynamics ono the basis of entropy. (ii) Boiling point of ethanol is 78.4^(@)C . Change in enthalpy during vaporisation of ethanol is 96J*mol^(-1) , calculate the change in entropy of vaporisation of enthanol.

Latent heat of vaporisation of the water at normal boiling point is 40.75 kJmol^-1 . Calculate the change in entropy of vaporisation.

The enthalpy change for the transition of liquid water to steam is 40.8KJ mol^(-1) at 373 K calculate the entropy of evaporation of water.

Latent heat in fusion of ice at 0^(@)C is 6025.24 J*mol^(-1) . Calculate molar entropy of the process at 0^(@)C .

At 25^(@)C the standard heat of formation of liquid H_(2)O is -286.0 kJ*mol^(-1) . Calculate the change in standard internal energy for this formation reaction.

The melting point and boiling point of sulphur dioxide are -75^(@)C and -10^(@)C respectively. If the change in enthalpy of fusion and vaporisation of sulphur dioxide are 7.4 " kJ mol"^(-1) and 25.2 " kJ mol"^(-1) respectively, calculate the change in entropy of fusion and vaporisation of SO_(2) ?

Heat required to completely vaporise 7.8g of benzene at 1 atm pressure and 80^(@)C temperature (boiling point of benzene) is 3.08 kJ. What is the value of the enthalpy of vaporisation of benzene? What will be the change in enthalpy if 54.6 g of benzene vapour is condensed at 1 atm pressure and 80^(@)C temperature ?

The enthalpy of vaporization of a certain liquid at its boiling point of 35^@C is 24.64 kJ mol^-1 . The value of change in entropy for the process is