Chemistry · JEE | Thermodynamics (Chemical Thermodynamics)

Which of the following represents the expression for the internal energy change of vaporization (\( \Delta_{\text{vap}} U \)) in terms of standard enthalpy of vaporization (\( \Delta_{\text{vap}} H^\ominus \))?

1. A
   \( \Delta_{\text{vap}} U = \Delta_{\text{vap}} H^\ominus + \Delta n_g RT \)
2. B
   \( \Delta_{\text{vap}} U = \Delta_{\text{vap}} H^\ominus \times \Delta n_g RT \)
3. C
   \( \Delta_{\text{vap}} U = \Delta n_g RT - \Delta_{\text{vap}} H^\ominus \)
4. D
   \( \Delta_{\text{vap}} U = \Delta_{\text{vap}} H^\ominus - \Delta n_g RT \)