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Standard Rxn Enthalpies for liquids and solids

Posted: Mon Jan 28, 2019 1:08 pm
by Daisylookinland
In the notes, Dr. Lavelle wrote "for a pure liquid or solid it [the standard rxn enthalpy] is the pure L or S"
Can someone explain what this means?

Re: Standard Rxn Enthalpies for liquids and solids

Posted: Mon Jan 28, 2019 2:23 pm
by Laura Gong 3H
It just means that the most stable form (its standard state) of a pure liquid or solid is liquid or solid.

Re: Standard Rxn Enthalpies for liquids and solids

Posted: Mon Jan 28, 2019 7:27 pm
by Kayla Vo 1B
To add on, the standard state basically is the physical state (solid, liquid, or gas) that a substance would be in under standard conditions (1.00 atm and 25 degrees Celsius). So, the standard state for carbon is solid and for water is liquid.