Thermodynamics

Question 1

What is the definition of lattice enthalpy?

Answer 1

The enthalpy change that accompanies the formation of one or more of an ionic lattice from its gaseous ions under standard conditions

Question 2

What is the definition of standard enthalpy change of formation?

Answer 2

The enthalpy change that accompanies the formation of one mole of a compound from its elements

Question 3

What is the definition of the standard enthalpy change of atomisation?

Answer 3

The standard enthalpy change when one mole of gaseous atoms is formed from its elements in standard states

Question 4

What is the definition of first ionisation energy?

Answer 4

The energy change that accompanies the removal of one mole of electrons from one mole of gaseous atoms

Question 5

What is the definition of the second ionisation energy?

Answer 5

The standard enthalpy change when one mole of gaseous 2+ ions are formed from one mole of gaseous 1+ ions

Question 6

What is the definition of the first electron affinity?

Answer 6

The standard enthalpy change when one mole of gaseous 1- ions is formed from gaseous atoms

Question 7

What is the definition of the second electron affinity?

Answer 7

The standard enthalpy change when one mole of gaseous 2- ions is formed from one mole of gaseous 1- ions

Question 8

What is the definition of the standard enthalpy change of solution?

Answer 8

The enthalpy change that takes place when one mole of a solute is completely dissolved in