Different Types Of Enthalpy

Question 1

Enthalpy of formation

Answer 1

1 mole of a compound formed from its element in their standard states under standard conditions

Question 2

Lattice enthalpy of formation

Answer 2

1 mole of a solid ionic compound is formed from gaseous ions under standard conditions

Question 3

Lattice enthalpy of dissociation

Answer 3

1 mole of a solid ionic compound is dissociated from its gaseous ions under standard conditions

Question 4

First ionisation

Answer 4

1 mole of gaseous 1+ ions formed from 1 mole of gaseous atoms

Question 5

Second ionisation

Answer 5

1 mole of gaseous 2+ ions of formed from 1 mole of gaseous 1+ ions

Question 6

1st electron affinity

Answer 6

1 mole of gaseous 1- ions made from 1 mole of gaseous atoms

Question 7

2nd electron affinity

Answer 7

1 mole of gaseous 2- ions made from 1 mole of gaseous 1- ions

Question 8

Atomisation of element

Answer 8

1 mole of gaseous atoms made from its elements in their standard states

Question 9

Atomisation of a compound

Answer 9

1 mole of a compound in its standard states converted into gaseous atoms

Question 10

Bond dissociation

Answer 10

All bond of the same type in 1 mole of gaseous molecules are broken

Question 11

Hydration

Answer 11

1 mole of aqueous gas is formed from gaseous ions

Question 12

Solution

Answer 12

1 mole of an ionic substance dissolved in enough solvent to form an infinitely dilute solution