For water H = 41 kJ mol at 373 K and 1 bar pressure. Assuming that water vapour is an ideal gas that — Thermodynamics and Thermochemistry Chemistry Question

Question

For water H = 41 kJ mol at 373 K and 1 bar pressure. Assuming that water vapour is an ideal gas that occupies a much larger volume than liquid water, the internal energy change during evaporation of water is _____ kJ mol [Use: R = 8.3 J mol K ] vap –1 –1 –1 -1