Thermodynamics A2

Question 1

What is the enthalpy change of formation?

Answer 1

The enthalpy change when 1 mole of a compound is formed from its elements in their standard states under standard conditions.

Question 2

What is the Lattice enthalpy of formation?

Answer 2

The enthalpy change when 1 mole of a solid ionic compound is formed from its gaseous ions under standard condition s

Question 3

What is the lattice enthalpy of dissociation?

Answer 3

The enthalpy change when 1 mole of a solid ionic compound is dissociated into its gaseous ions under standard conditions

Question 4

What is the enthalpy change of dissociation?

Answer 4

The enthalpy change when 1 mole of bonds of the same type of molecule in the gaseous state is broken.

Question 5

What is the enthalpy change of 1st ionisation?

Answer 5

The enthalpy change when 1 mole of gaseous 1+ ions are made from 1 mole of gaseous atoms