3.1.4 Energetics
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24 Terms
What is the definition of Enthalpy change?
Heat energy change of a reaction at constant pressure.
What is the definition of Activation energy?
Minimum energy that colliding particles must have for a reaction to occur.
What is the definition of Mean bond enthalpy?
Energy required to break a covalent bond in the gas phase, averaged over a range of compounds
What is the definition of Standard enthalpy of formation?
Enthalpy change when 1 mole of a compound is formed from the elements in their standard states under standard conditions
What is the definition of standard enthalpy of combustion?
Enthalpy change when 1 mole of a substance is burned completely in oxygen under standard conditions
What is the definition of Hess law?
The enthalpy change of a reaction is independent of the route taken.
