AIPMT 2012 Physics and Chemistry Paper

Question : 89 of 100

Marks: +1, -0

Standard enthalpy of vapourisation ∆‌vap ‌H∘ for water at 100∘C is 40.66‌kJ‌mol−1. The internal energy of vaporisation of water at 100∘C(. in .kJmol−1) is :
(Assume water vapour to behave like an ideal gas).