If water vapour is assumed to be a perfect gas, the molar enthalpy change for vapourisation of 1 mol of water at 1 bar and 100°C is 41kJ mol –1 . Calculate the internal energy change, when 1 mol of water is vapourised at 1 bar pressure and 100°C.

Question

If water vapour is assumed to be a perfect gas, the molar enthalpy change for vapourisation of 1 mol of water at 1 bar and 100°C is 41kJ mol –1 . Calculate the internal energy change, when 1 mol of water is vapourised at 1 bar pressure and 100°C., 37.904 kJ mol –1, 35.854 kJ mol –1, 39.904 kJ mol –1, 42.575 kJ mol -1

MARKS App · Accepted Answer

Correct Option is : (A) 37.904 kJ mol –1

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