Edexcel IAL Chemistry A2 20.1 empirical, molecular and structural formulae
Edexcel IAL Chemistry A2 20.1 empirical, molecular and structural formulae
Work from the evidence in order: convert combustion masses to moles, use spectra and functional-group tests, then check the final structure against the molecular formula.
How this is tested
- Calculate empirical formulae from CO2, H2O and oxygen-by-difference data.
- Use functional-group tests and IR, MS, 13C NMR or proton NMR to justify structures.
- Deduce structural formulae from empirical formulae, molecular formulae and test evidence.