What is the work done against the atmosphere when 25 grams of water vapourizes at 373 K against
Channel: Doubtnut
Date: 2020-04-19

What is the work done against the atmosphere when 25 grams of water vapourizes at 373 K against a constant external pressure of 1 atm ? Assume that steam obeys perfect gas laws. Given that the molar  enthalpy of vaporization  is `9.72 kcal//"mole"`, what is the change of enternal energy in the above process? [Take R =`2cal//mol//K`]