Why does pressure start off high in the Pressure-Volume Diagram starting from a compressed liquid to a super heated vapor?
Noting that the temperature is constant in the process,I can't seem to understand why it would start at a high pressure going to lower pressure.
Meanwhile, I can understand the Temperature-Volume Diagram why temperature started of at a low value then increases eventually.
It seems that I am confused at the idea of changing saturation temperature and pressure. On the other hand, I understand the idea that boiling point and melting point temperatures can change if we are given with different pressures.