Enthalpy of Formation

We can calculate the enthalpy change that occurs when one mole of a substance is made from its elements under standard conditions. This can then be used to calculate the theoretical enthalpy change of a reaction involving that substance.

You need to be able to:

• define Standard Enthalpy of Formation
• write a balanced equation for the Standard Enthalpy of Formation for a given molecule/compound.

Once you master that, you can use Standard Enthalpy of Formation values to calculate Standard Enthalpy values for any given reaction: