Molecular Formula from Epirical Formula and Mass
This will guide you through determining the molecular formula of a compound just based on the mass of its parts and the empirical formula.
Molecular Formula: The actual formula for a molecule.
Problem: A compound has an empirical formula of ClCH2 and a molecular weight of 98.96 g/mol. What is its molecular formula?
- Find the mass of the empirical unit.
- Figure out how many empirical units are in a molecular unit.
- Write the molecular formula.