Chemistry Terms

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  • Created by: Madelen
  • Created on: 20-01-15 12:35
Standard Conditions
Pressure of 100kPa, Temperature of 298K
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Hess' Law
If the reaqction can take more than one route then the overall enthalpy change is indepedent of the reaction taken
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Enthalpy Formation
the enthalpy change when one mole of a compound is formed from its elements in their standard states under standard conditions
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Ionisation enthalpy
the enthalpy change when a mole of electrons is removed from a mole of gaseous atoms, ions or molecules to form a gaseous cation
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Enthalpy of atomisation
the enthalpy change when one mole of gaseous atoms is formed from an element or compound
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Bond dissociation enthalpy
the enthalpy change when one mole of bonds of the same type in gaseous molecules is broken under standard conditions, producing gaseous fragments
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Electron affinity
the enthalpy change when one mole of bonds is gained by a mole of gaseous atoms, ions or molecules to form a gaseous anion
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Lattice Dissociation enthalpy
the enthalpy change when one mole of an ionic solid is seperated into gaseous ions
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Lattice formation enthalpy
the enthalpy change when one mole of an ionic solid is formed from its gaseous ions
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Enthalpy of hydration
the enthalpy change when one mole of seperated gaseous ions is dissolved completely in water to form one mole of aqeous ions
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Enthalpy of solution
the enthalpy change when one mole of an ionic substance is dissolved into a volume of large enough to ensure that the ions are seperated and do not interact with each other
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Card 2

Front

If the reaqction can take more than one route then the overall enthalpy change is indepedent of the reaction taken

Back

Hess' Law

Card 3

Front

the enthalpy change when one mole of a compound is formed from its elements in their standard states under standard conditions

Back

Preview of the back of card 3

Card 4

Front

the enthalpy change when a mole of electrons is removed from a mole of gaseous atoms, ions or molecules to form a gaseous cation

Back

Preview of the back of card 4

Card 5

Front

the enthalpy change when one mole of gaseous atoms is formed from an element or compound

Back

Preview of the back of card 5
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