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Enthalpy change
AS
Energetics
Physical
AQA Content
define standard enthalpy of combustion (∆cHƟ)
define standard enthalpy of formation (∆fHƟ).
Specification Notes
Reactions can be endothermic or exothermic.
Enthalpy change (∆H) is the heat energy change measured under conditions of constant pressure.
Standard enthalpy changes refer to standard conditions, ie 100 kPa and a stated temperature (eg ∆H298Ɵ).
Notes
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