Chemistry Unit 4 Enthalpy Definitions

Front 1

First Ionisation Enthalpy

Back 1

Enthalpy change when one mole of gaseous E+ ions are formed from 1 mole of gaseous atoms under standard conditions. ENDOTHERMIC

Front 2

Second Electron Affinity

Back 2

Enthalpy change when one mole of E2- ions are formed from one mole of E- (g) ions under standard conditions. ENDOTHERMIC

Front 3

Enthalpy Of Formation

Back 3

Enthalpy change when one mole of a substance is formed from 1 mole of its constituent elements under standard conditions. EITHER EXO/ENDO.

Front 4

Standard Enthalpy Change of Neutralisation

Back 4

Enthalpy change that accompanies neutralisation of aqueous acid by aqueous base to form one mole of H20 under standard conditions

Front 5

Heat of Atomisation

Back 5

Enthalpy change when one mole of gaseous atoms are formed from the element in standard state under standard conditions. ENDOTHERMIC

Front 6

Second Ionisation Enthalpy

Back 6

Enthalpy change when one mole of gaseous E2+ ions are formed from one mole of gaseous E+ ions under standard conditions. ENDOTHERMIC

Front 7

First Electron Affinity

Back 7

Enthalpy change when one mole of E- ions are formed from gaseous atoms. ENDOTHERMIC

Front 8

Lattic Enthalpy

Back 8

Enthalpy change when one mole of an ionic lattice is formed from its constituent gaseous ions. EXOTHERMIC

Front 9

Standard Enthalpy Change of Solution

Back 9

Enthalpy change when one mole of a compound is completely dissolved in water under standard conditions
EITHER EXO/ENDO

Front 10

Standard Enthalpy Change of Hydration

Back 10

Enthalpy change when one mole of isolated gaseous ions is dissolved in water forming one mole of aqueous ions under standard conditions. EXOTHERMIC