# What would be the empirical formula of ethane?

$C {H}_{3}$
Empirical formulas are the simplest ratio of the atoms in a compound. Ethane has a molecular formula of ${C}_{2} {H}_{6}$. Both of the number of carbons and hydrogens are divisible by 2, so to get the empirical formula we are trying to find their lowest ratio, which in this case is $C {H}_{3}$.