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KVPY2012ChemistryThermodynamics (C)

The H for vaporization of a liquid is 20 ~kJ / mol . Assuming ideal behaviour, the change in internal energy for the vaporization of 1 ~mol of the liquid at 60^ C and 1 bar is close to -

Options

  1. A13.2 ~kJ / mol
  2. B17.2 ~kJ / mol
  3. C19.5 ~kJ / mol
  4. D20.0 ~kJ / mol

Correct answer

B. 17.2 ~kJ / mol

Step-by-step solution

array l H = E + n _ g RT 20= E +8.314 10⁻³ 333 E =17.2 ~kJ / mol array

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