What does the latent heat of condensation equal at constant pressure?

The latent heat of condensation at constant pressure is equal to the latent heat of vaporization, but with a crucial distinction: during condensation, the system releases energy, while vaporization requires energy input. Essentially, the latent heat of vaporization is the amount of heat required to convert a unit mass of a substance from liquid to vapor at constant temperature and pressure. Conversely, the latent heat of condensation is the energy released when that vapor condenses back into liquid form.

This relationship highlights the fact that these two processes are directly related; the energy exchanged during condensation is precisely the same amount as that required to vaporize the same mass of the substance under identical conditions. Understanding this principle is vital in thermodynamics and refrigeration systems, where the phase changes of refrigerants play a critical role in their efficiency and operational mechanics.