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I do not really understand the difference between standard reaction enthalpy and standard enthalpy of formation. What makes them different, and how would we be asked to use them?
Reaction enthalpy is the heat given off/absorbed during a reaction while enthalpy of formation is the difference between the elements in their standard state and the compound they form. You will need to use these in the different methods for calculating enthalpy.
Standard enthalpy of reaction can be any type of reaction but standard enthalpy of formation is specifically forming one mole of a compound using elements in standard states.
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