Edexcel IAL Chemistry AS 6.4 Standard enthalpy-change definitions
Edexcel IAL Chemistry AS 6.4 Standard enthalpy-change definitions
Identify the named enthalpy quantity, write an equation for exactly one mole of the required species and ensure every element or substance is in its standard state.
How this is tested
- Select formation equations that produce exactly one mole from elements in standard states.
- Define combustion, neutralisation or atomisation through the required one-mole change.
- Explain why an element in its standard state has zero standard formation enthalpy.