Suppose we vaporize a mole of liquid water at 25C and another mole of water at 100C.

Question:

Suppose we vaporize a mole of liquid water at 25°C and another mole of water at 100°C.
(a) Assuming that the enthalpy of vaporization of water does not change much between 25°C and 100°C, which process involves the larger change in entropy?
(b) Does the entropy change in either process depend on whether we carry out the process reversibly or not? Explain.