Chemistry · THERMODYNAMICS

Consider the following statements regarding thermodynamic spontaneity and enthalpy: (A) A decrease in enthalpy is an absolute and sole criterion for spontaneity in all chemical reactions. (B) Endothermic reactions can be spontaneous if they proceed with an increase in entropy or disorder. (C) In an isolated system, spontaneous processes are driven by a tendency of the system's energy to become more disordered or chaotic. (D) Diffusion of two gases into each other in an isolated vessel occurs with \( \Delta H = 0 \) and is a spontaneous process. How many of the above statements are correct?

1. Only one
2. Only two
3. Only three
4. All four