Chemistry · THERMODYNAMICS

Consider the following statements for an ideal gas expanding isothermally: (A) In a reversible isothermal expansion, the process occurs in infinite infinitesimal steps. (B) The work done in isothermal reversible expansion is given by \( w_{\text{rev}} = -2.303\, nRT \log(\frac{V_f}{V_i}) \). (C) For isothermal expansion against vacuum, the work done is maximum. (D) The change in internal energy during isothermal expansion of an ideal gas is zero. Choose the correct answer from the options given below:

1. A
   (A) and (C) only
2. B
   (B), (C) and (D) only
3. C
   (A), (B) and (D) only
4. D
   (C) and (D) only