Calculate the entropy change when 1 mole of ethanol is evaporated at 351 K. The molar heat of vaporization of ethanol is 39.84 kJ "mol"^(-1)

Calculate the entropy change when 1 mole of ethanol is evaporated at 3

1.	Calculate the entropy change when 1 mole of ethanol is evaporated at 351 K. The molar heat of vaporization of ethanol is 39.84 kJ "mol"^(-1)
Answer» Solution :Given : `DeltaH_"VAP"=39840 "J MOL"^(-1) "" DeltaS_v=(DeltaH_"vap")/T_b` `T_b=351 K"" DeltaS_v=39840/351` `DeltaS_v=113.5 J K^(-1) "mol"^(-1)`