# What is the empirical formula of propene? Of polypropene?

Mar 13, 2017

$\text{Propylene}$ has an empirical formula of $C {H}_{2}$; $\text{polypropylene}$ has the same empirical formula.

#### Explanation:

The empirical formula is the simplest whole number ratio that defines constituent atoms in a species. If we were to get a sample of propylene of known mass, and burn it under oxygen, and then analyze the products (carbon dioxide and water), we would find a $2 : 1$ molar ratio between hydrogen and carbon.

Since $\text{polypropylene}$ is the polymer of the propylene monomer, we would find exactly the same empirical formula.