posted by bubble on .
1.Vapor pressure is the pressure exerted by a vapor when condensation
evaporation over its liquid in a closed system.
2.Evaporation is an
process, because when a substance evaporates it must
energy to(from) its surroundings.
Here is the answer to #1.
For #2, can't you reason through this? What must you do to a pot of water to make it evaporate. Do you heat it or cool it? Does that mean it is endothermic or exothermic? Endothermic means it is absorbing heat. Exothermic means it is releasing heat.
1 is equal bc of equilibrium
2 is endothermic bc of absorbing heat
3 is absorb....bc it is endothermic