  ##### Differentiate between empirical formula and a molecular formula?
Difficulty: Easy
 Empirical Formula Molecular Formula 1. Empirical formula of a compound is the chemical formula that gives the simplest whole-number ratio of atoms of each element. 1. A molecular formula gives the actual whole number ratio of atom of each element present in a compound. 2. A formula that represents the simplest whole number ratio of atoms of elements in a compound. 2. A formula which represents actual number of atoms of elements in a compound. 3. It is obtained from elemental analysis $= \frac{\text{Molecular formula}}{\text{n}}$ 3. It is obtained by multiplying “n” with empirical formula where: $= \frac{\text{Molecular mass}}{\text{Empirical formula mass}}$ 4. It is used for both molecular and ionic compound. 4. It is used for molecular compounds. 5. Examples: $\text{C}\text{H}_{2}\text{O}$ and $\text{CH}$ are empirical formulae of glucose and benzene respectively. 5. Examples: $\text{C}_{6}\text{H}_{12}\text{O}_{6}$ and $\text{C}_{6}\text{O}_{6}$ are molecular formulae of glucose and benzene respectively.