heat in changes of state

the amount of heat absorbed by one mole of a solid substance as it melts to a liquid at a constant temperature
molar heat of fusion
the amount of heat lost by one mole of a liquid as it solidifies at a constant temperature
molar heat of solidification
molar heat of fusion= –
molar heat of solidification
the amount of heat absorbed by one mole of a liquid as it vaporizes at a constant temperature
molar heat of vaporization
the amount of heat released by one mole of a vapor as it condenses to a liquid at a constant temperature
molar heat of condensation
molar heat of vaporization= –
molar heat of condensation
molar heat of fusion of water
6.01 kj/ mol
molar heat of vaporization of water
23.4 Kj/mol
what happens (concerning heat) during the formation of a solution?
heat is either released or absorbed