Definitions

Question 1

Lattice enthalpy

Answer 1

The enthalpy change to form one mole of ionic compound from its gaseous ions under standard conditions

Question 2

Enthalpy change of formation

Answer 2

Enthalpy change to form one mole of compound from its elements in their standard states under standard conditions

Question 3

Enthalpy o atomisation

Answer 3

Enthalpy change to form one mole of gaseous atom from its elements in heir standard states under standard conditions

Question 4

Enthalpy change of solution

Answer 4

Enthalpy change when one mole of ionic lattice completely dissolves in water

Question 5

Enthalpy of hydration

Answer 5

Enthalpy change when one mole of gaseous ions dissolves in water to form one mole of aqueous ion

Question 6

Standard electrode potential

Answer 6

Standard electrode potential is the e.m.f of a half-cell connected to a standard hydrogen half-cell under Städte conditions of 298K, solution concentration of 1M and pressure of 100kPa