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KVPY2014ChemistryThermodynamics (C)

The milar enthalpy change for H ₂ O (1) H 2 O ( g ) at 373 ~K and 1 ~atm is 41 ~kJ / mol . Assuming ideal behavior, the internal energy change for vaporization of 1 mol of water at 373 ~K and 1 atm in kJ mil ⁻¹ is

Options

  1. A30.2
  2. B41.0
  3. C48.1
  4. D37.9

Correct answer

D. 37.9

Step-by-step solution

E = H - ( PV )= H - n _ g RT

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