Assuming that water vapour is an ideal gas, the internal energy change, ( Δ U) when 1…
Chemistry · NEET · NTA Exams — Chemical Thermodynamics
Assuming that water vapour is an ideal gas, the internal energy change, (ΔU) when 1 mole of water is vaporised at 1 bar pressure and 100°C (Given: Molar enthalpy of vapourisation of water at 1 bar and 373 K = 41 kJ mol-1 and R = 8.31 J mol-1 K-1) will be:
- 4.100 kJ mol-1
- 3.7904 kJ mol-1
- 37.904 kJ mol-1
- 41.00 kJ mol-1
Answer
(B) 3.7904 kJ mol -1
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