If a reaction can take place by more than one route and the initial and final conditions are the same, the total enthalpy change is the same for each route.
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Enthalpy Change of Reaction
When molar quantities are expressed in a chemical equation under standard conditions, all reactants and products being in the same states.
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Enthalpy Change of Formation
When 1 mole of a compund in its standard state is formed from its constituent elements in their standard states under standard conditions.
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Enthalpy Change of Combustion
When 1 mole of a substance reacts completely with oxygen under standard conditions, all reactants and productsbeing in their standard states.
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Lattice Enthalpy
The formation of 1 mole of an ionic compound from its gaseous ions under standard conditions.
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Enthalpy Change of Atomisation
When 1 mole of gaseous atoms forms from the element in its standard state.
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First Ionisation Energy
The removal of 1 electron from each atom in 1 mole of gaseous atoms to form 1 mole of gaseous 1+ ions.
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First Electron Affinity
The addition of 1 electron to each atom in 1 mole of gaseous atoms to form 1 mole of gaseous 1- ions.
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Enthalpy Change of Solution
When 1 mole of a compund is completely dissolved in water under standard conditions.
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Enthalpy Change of Hydration
When 1 mole of isolated gaseous ions is dissolved in water forming 1 mole of aqueous ions under standard conditions.
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Enthalpy Change of Neutralisation
The neutralisation of an aqueous acid by an aqueous base to form 1 mole of water under standard conditions.
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Other cards in this set
Card 2
Front
When molar quantities are expressed in a chemical equation under standard conditions, all reactants and products being in the same states.
Back
Enthalpy Change of Reaction
Card 3
Front
When 1 mole of a compund in its standard state is formed from its constituent elements in their standard states under standard conditions.
Back
Card 4
Front
When 1 mole of a substance reacts completely with oxygen under standard conditions, all reactants and productsbeing in their standard states.
Back
Card 5
Front
The formation of 1 mole of an ionic compound from its gaseous ions under standard conditions.
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