Question

The empirical formula of an organic compound is C2H4O. The molecular mass of the compound is 176g/mol.

Answer 1

Answer:

The molecular formula of the compound is $C_{8}H_{16}O_{4}$.

Explanation:

Given empirical formula of the compound is $C_{2}H_{4}O$.

Atomic mass of carbon = 12 u

Atomic mass of hydrogen = 1 u

Atomic mass of oxygen = 16 u

Empirical formula mass of compound = $\left ( 12\times 2+4+16 \right ) = 44 \textrm{ g/mol}$

Molecular mass of compound = 176 g/mol

$n = \displaystyle \frac{176}{44} = 4$

Molecular formula = n $\times$ Empirical formula

Molecular formula = 4 $\times$ $C_{2}H_{4}O$

Molecular formula of the compound is $C_{8}H_{16}O_{4}$