The molecular formula of a compound is related to its empirical formula by
AMolecular formula $=$ empirical formula $+ n$
BMolecular formula $= n \times$ empirical formula
CMolecular formula $= \dfrac{\text{empirical formula}}{n}$
DMolecular formula $= n +$ molecular weight
Answer & Solution
Correct answer: B. Molecular formula $= n \times$ empirical formula
The chapter gives the relation directly: molecular formula $= n \times$ empirical formula, where $n$ is a whole number obtained from the ratio of molecular weight to empirical formula weight.