Which formula is both a molecular and an empirical formula?
(1) c6h12o6 (3) c3h8o
(2) c2h4o2 (4) c4h8

Answer : The correct option is, (3)

Explanation :

Empirical formula : It is defined as the simplest or most reduced ratio of atoms in a compound.

Molecular formula : It is defined as the how many atoms of each element present in a compound.

From the given options, the option (3) formula represent both a molecular and an empirical formula.

From formula, we can determine the molecular formula by multiplying the whole numbers (1, 2, 3, 4 ....etc.)

While the other options, (1), (2) and (4) do not represent both a molecular and an empirical formula. Only represent the molecular formula.

The molecular formula of Glucose is, and the empirical formula will be,

The molecular formula of Ethanoic acid is, and the empirical formula will be,

The molecular formula of Butene is, and the empirical formula will be,

Hence, the formula represent both a molecular and an empirical formula is,