Enthalpy

Question 1

Standard lattice enthalpy

Answer 1

The enthalpy change when 1 mole of an ionic lattice is formed from its gaseous ions under standard conditions

Question 2

Enthalpy change of hydration

Answer 2

The enthalpy change when 1 mole of gaseous ions dissolves in water

Question 3

Enthalpy change of solution

Answer 3

The enthalpy change when 1 mole of solute dissolves completely in water

Question 4

Enthalpy change

Answer 4

The heat energy transferred in a reaction at a constant pressure

Question 5

Standard enthalpy change of reaction

Answer 5

The enthalpy change when the reaction occurs in the molar quantities shown in the chemical equation under standard conditions

Question 6

Standard enthalpy change of formation

Answer 6

The enthalpy change when 1 mole of a compound is formed from its elements in their standard states under standard conditions

Question 7

Standard enthalpy change of combustion

Answer 7

The enthalpy change when 1 mole of a substance is completely burned in oxygen under standard conditions

Question 8

Standard enthalpy of neutralisation

Answer 8

The enthalpy change when an acid and an alkali react together under standard conditions

Question 9

Standard conditions

Answer 9

100 kPa, 1 atm, 298K