Enthalpy Definitions

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Lattice Enthalpy
The enthalpy change when one mole of an ionic compound is formed from it gaseous ions under standard conditions.
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Standard enthalpy change of formation
The enthalpy change when one mole of a compound is formed from its elements under standard conditions. The compound and its elements must be in their standard states.
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Standard enthalpy change of atomisation
The enthalpy change when one mole of gaseous atoms forms from the element in its standard state.
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1st Ionisation energy
The energy required to remove one mole of electrons from one mole of gaseous atoms to produce one mole of gaseous ions ,each with a +1 charge.
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1st Electron affinity
The enthalpy change when one mole of electrons is added to one mole of gaseous atoms to produce one mole of gaseous ions, each with a -1 charge.
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Enthalpy change of solution
The enthalpy change when one mole of a compound is completely dissolved in water under standard conditions.
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Enthalpy change of hydration
The enthalpy change when one mole of isolated gaseous ions is dissolved in water, forming one mole of aqueous ions, under standard conditions.
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Card 2

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The enthalpy change when one mole of a compound is formed from its elements under standard conditions. The compound and its elements must be in their standard states.

Back

Standard enthalpy change of formation

Card 3

Front

The enthalpy change when one mole of gaseous atoms forms from the element in its standard state.

Back

Preview of the back of card 3

Card 4

Front

The energy required to remove one mole of electrons from one mole of gaseous atoms to produce one mole of gaseous ions ,each with a +1 charge.

Back

Preview of the back of card 4

Card 5

Front

The enthalpy change when one mole of electrons is added to one mole of gaseous atoms to produce one mole of gaseous ions, each with a -1 charge.

Back

Preview of the back of card 5
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