Standard enthalpy of vaporisation ΔvapH⁰ for water at 100°C is 40.66 kJmol⁻¹. The internal energy of vaporisation of water at 100°C (in kJ mol⁻¹) is
A
+40.66
B
+37.56
C
-43.76
D
+43.76

Question

Standard enthalpy of vaporisation ΔvapH⁰ for water at 100°C is 40.66 kJmol⁻¹. The internal energy of vaporisation of water at 100°C (in kJ mol⁻¹) is

Accepted Answer

+37.56

Answer

+40.66

Answer

-43.76

Answer

+43.76

AIPMT PRELIMS 2012 Chemistry Enthalpy and Internal Energy MCQ Question