From Empirical Formula to Final Formula

Empirical formula is a simplified ratio of the final formula. For example,

Compare the relative molecular mass of both side.

You will realise that molecular formula can be found by multiplying empirical formula with a given factor.

OR

Molecular formula / empirical formula = a factor, n

Examples ...

Q1. A compound has an empirical formula of CH2. Its relative molecular mass is 56. What its molecular formula?

Solution