Chapter 4 Flashcards
Enthalpy
The amount of heat stored in a substance
Enthalpy Change
The change in heat in a substance at a fixed pressure
Standard enthalpy of reaction
The enthalpy change that occurs during a reaction that follows the chemical equation
Standard enthalpy of combustion
the enthalpy change when one mole of a substance is completely combusted with oxygen with all reactant and products in their standard states under standard conditions
Standard enthalpy of formation
The enthalpy change when one mole of a substance is formed from its constituent elements in their standard states, under standard conditions
Hess Law
the enthalpy change of the reaction is independent of the route
Standard enthalpy of neutralization
The enthalpy change when one mole of water is produced during the reaction of acid and base in their standard states, under standard conditions
Mean bond enthalpy
the average enthalpy change required to break a covalent bond over a range of molecules
Bond dissociation enthalpy
the enthalpy change required to break a covalent bond with all species in the gaseous state
