Assuming that, water vapour is an ideal gas the internal energy `(Delta U)` when 1 mol of water is vapourised at 1 bar pressure and `100^(@)C` (given : molar enthalpy of vaporisation of water at 1 bar and `373 K = 41 kJ mol^(-1) and R = 8.3 J K^(-1) mol^(-1)`)) will be

Options

A. `41.00 kJ mol^(-1)`
B. `4.100 kJ mol^(-1)`
C. `3,7904 J mol^(-1)`
D. `37,904 kJ mol^(-1)`

Answer

C, D