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NEETChemistryThermodynamics (C)

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.

Options

  1. A37.904 kJ mol –1
  2. B35.854 kJ mol –1
  3. C39.904 kJ mol –1
  4. D42.575 kJ mol -1

Correct answer

A. 37.904 kJ mol –1

Step-by-step solution

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

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