I have a question about the illustration from chem.libretexts.org:
the ground states of the liquid and gas are offset from that of the previous state by the heats of fusion and vaporization, respectively.
Why does the change in enthalpy increase the ground state energy?
I would be very grateful if someone can help me with this problem. I have been struggling with it for five days, but Google could not help me.
P.S. My question mark does not work.