Thermodynamics

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  • Created by: r98
  • Created on: 21-03-16 19:47
Enthalpy change
Measured heat change at constant pressure.
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Standard conditions
100kPa & 298K.
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Standard molar enthalpy of formation
The enthalpy change when one mole of a compound is formed from its constituent elements under standard conditions, all reactants and products in their standard state.
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Standard enthalpy of atomisation
The enthalpy change which accompanies the formation of one mole of gaseous atoms from the element in its standard state under standard conditions.
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First ionisation energy (first IE)
The standard enthalpy change when one mole of gaseous atoms is converted into a mole of gaseous ions each with a single positive charge.
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First electron affinity (EA)
The standard enthalpy change when a mole of gaseous atoms is converted into a mole of gaseous ions, each with a single negative charge.
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Second electron affinity (EA)
The enthalpy change when a mole of electrons is added to a mole of gaseous ions eaxh with a single negative charge to form ions each with two single negative charges.
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Lattice formation enthalpy
The standard enthalpy change when one mole of solid ionic compound is formed from its gaseous ions.
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Enthalpy of lattice dissociation
When one mole of ionic compound seperates into its gaseous ions
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Enthalpy of hydration
The standard enthalpy change when water molecules surround one mole of gaseous ions.
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Enthalpy of solution
The standard enthalpy change when one mole of solute dissolves completely in sufficient solvent to form a solution in which the molecules or ions are far enough apart not to interact with each other.
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Mean bond enthalpy
The enthalpy change when one mole of gaseous molecules each breaks a covalent bond to form two free radicals, averaged over a range of compounds.
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Spontaneous/feasible
That a reaction has a tendency to happen.
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Other cards in this set

Card 2

Front

100kPa & 298K.

Back

Standard conditions

Card 3

Front

The enthalpy change when one mole of a compound is formed from its constituent elements under standard conditions, all reactants and products in their standard state.

Back

Preview of the back of card 3

Card 4

Front

The enthalpy change which accompanies the formation of one mole of gaseous atoms from the element in its standard state under standard conditions.

Back

Preview of the back of card 4

Card 5

Front

The standard enthalpy change when one mole of gaseous atoms is converted into a mole of gaseous ions each with a single positive charge.

Back

Preview of the back of card 5
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