Lattice enthalpy, entropy, and free energy
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1. Lattice enthalpy The enthalpy change that accompanies the formation of
one mole of ionic lattic from its gaseous ions under stan-
dard conditions
2. Enthalpy of for- Enthalpy change that accompanies the formation of one
mation mole of a compound from its constituent elements in their
standard state under standard conditions
3. 1st Ionisation en- enthalpy change that accompanies the removal of one
ergy mole of electrons from one mole of gaseous atoms to form
one mole of gaseous 1+ ions
4. Enthalpy change The enthalpy change that takes place when one mole of
of atomisation gaseous atoms forms from the element in its standard
state.
5. 1st electron affin- The enthalpy change that takes place when one electron
ity is added to each atom in one mole of gaseous atoms to
form one mole of gaseous 1- ions
6. Enthalpy of solu- the energy change that takes place when one mole of
tion a solute is dissolved completely in water under standard
conditions
7. Enthalpy of hy- the enthalpy change that occurs when dissolving one mole
dration gaseous ions in water under standard conditions
8. What factors af- small ionic size and large ionic charge makes lattice en-
fect lattice en- thalpy more negative as the ions are attracted to each oth-
thalpy er more strongly so more energy is needed to overcome
the ionic bonds
9. Entropy - a measure of disorder
- there is a tendancy towards disorder
- entropy change that accompanies a reaction in the molar
quantities expressed in a hemical equatio under standard
conditions with products and reactants in their standard
states
10. Entropy equation ”S = Sproducts - Sreactants
1/2
Study online at https://quizlet.com/_bbt42h
1. Lattice enthalpy The enthalpy change that accompanies the formation of
one mole of ionic lattic from its gaseous ions under stan-
dard conditions
2. Enthalpy of for- Enthalpy change that accompanies the formation of one
mation mole of a compound from its constituent elements in their
standard state under standard conditions
3. 1st Ionisation en- enthalpy change that accompanies the removal of one
ergy mole of electrons from one mole of gaseous atoms to form
one mole of gaseous 1+ ions
4. Enthalpy change The enthalpy change that takes place when one mole of
of atomisation gaseous atoms forms from the element in its standard
state.
5. 1st electron affin- The enthalpy change that takes place when one electron
ity is added to each atom in one mole of gaseous atoms to
form one mole of gaseous 1- ions
6. Enthalpy of solu- the energy change that takes place when one mole of
tion a solute is dissolved completely in water under standard
conditions
7. Enthalpy of hy- the enthalpy change that occurs when dissolving one mole
dration gaseous ions in water under standard conditions
8. What factors af- small ionic size and large ionic charge makes lattice en-
fect lattice en- thalpy more negative as the ions are attracted to each oth-
thalpy er more strongly so more energy is needed to overcome
the ionic bonds
9. Entropy - a measure of disorder
- there is a tendancy towards disorder
- entropy change that accompanies a reaction in the molar
quantities expressed in a hemical equatio under standard
conditions with products and reactants in their standard
states
10. Entropy equation ”S = Sproducts - Sreactants
1/2
