A21 - 4.1 Lattice Enthalpy Defintions

Question 1

Lattice enthalpy

Answer 1

The enthalpy change when one mole of an ionic compound is converted to gaseous ions.

Question 2

Enthalpy of atomisation

Answer 2

The enthalpy change when one mole of gaseous atoms is formed from the element in its standard state.

Question 3

First electron affinity

Answer 3

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

Question 4

Enthalpy of solution

Answer 4

The enthalpy change when one mole of a solute dissolves in water.

Question 5

Enthalpy of hydration

Answer 5

The enthalpy change when one mole of gaseous ions is converted to one mole of aqueous ions.