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The back of the textbook should have a table of enthalpy values for the different physical states of common compounds, however, I dont think that there exist an equation that allows you to calculate the enthalpy of ice given the enthalpy of water
Yes, even for the same substance, its standard enthalpy of formation is different depending on what state it is in. On tests and in the textbook, the standard enthalpies of formation are given and specific to whatever physical state the molecule is in, so we have to pay attention to that.
The back of the book does have standard enthalpy of formation for several compounds in multiple states. It is definitely listed for water in solid, liquid and gas forms (they just did the phase conversion for us).
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