Chemistry - A2 Enthalpy

Define Enthalpy change of Formation

The energy change needed for the formation of a mole of a substance from it’s constituent elements in standard state/conditions.

Define Enthalpy change of combustion

The energy change needed for 1 mole of compound to be completely combusted (reacted with oxygen) in standard conditions under standard state.

Define energy change of Neutralization

The enthalpy change needed for the formation of one mole of water from a neutralisation reaction in standard state under standard conditions.

Define ionisation enthalpy

The energy needed for one mole of gaseous compounds to lose an electron forming a 1+ gaseous ion.