Energetics

Card Set Information

Author:
kc97
ID:
292218
Filename:
Energetics
Updated:
2016-05-25 14:37:13
Tags:
words energetics
Folders:
AS Chemistry Unit 1
Description:
important
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  1. First Law of Thermodynamics
    Energy cant be made or destroyed. It's dissipated
  2. Enthalpy Change and its units?
    • The heat transfer of a reaction at an constant pressure.
    • Unit are KJ mol-1
  3. Standard enthalpy change of formation?
    The enthalpy change when one mole of a compound is formed from its elements in their standard states at 298K and 1 atm
  4. Standard enthalpy change of combustion?
    The enthalpy change when one mole of a substance is completely burnt in excess oxygen at 298K and 1 atm
  5. Standard enthalpy change of neutralisation
    The enthalpy change when an acid reacts with a base to form one mole of water at 298K and 1 atm
  6. Standard enthalpy change of atomisation
    The enthalpy change when one mole of atoms in their gaseous state is formed from an element in its standard state at 298K and 1 atm
  7. Mean bond enthalpy/Bond dissociation enthalply
    The enthaply change required to break one mole of covelant bond in the gaseous state
  8. Standard enthalpy change of a reaction
    The enthalpy change when the reaction occurs in the molar quantities shown in the balanced equation at 298K and 1 atm
  9. Hess's Law
    The total enthaply change of a reaction is independent of the route taken
  10. Lattice energy
    • Tenthalpy change when 1 mole
    • of an ionic crystal lattice is formed from its constituent ions in gaseous form.
  11. 1st electron affinity
    The enthalpy change when one mole of electrons are added to one mole of gaseous atoms to form one mole of singly charged negative ions in a gaseous state at 298K and 1 atm
  12. 1st Ionisation energy?
    The enthalpy change when one mole of electrons are removed from one mole of gaseous atoms to form one mole of singly charged positive ions in a gaseous state at 298K and 1 atm

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