3.1.8 Thermodynamics

Question 1

What is the definition of the enthalpy of combustion?

Answer 1

The enthalpy change when 1 mole of a substance undergoes complete combustion in oxygen with all substances in standard states.

Question 2

What is the definition of the enthalpy of neutralisation?

Answer 2

The enthalpy change when 1 mole of water is formed in a reaction between an acid and alkali under standard conditions.

Question 3

What is the definition of mean bond enthalpy?