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What does it mean when the standard enthalpy of formation of one molecule is more negative than another? For example, in class the standard enthalpy of formation for CO2 was -394 kJ/mol and for CH4 it was -75 kJ/mol. Does this mean CO2 is more stable?
I believe enthalpy refers to the amount fo energy that goes into the bond formation of that compound, the higher the enthalpy, the more energy that goes into the bond. Higher energy bonds also tend to be more reactive and release more energy so i think a higher enthalpy means less stable.
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