Question

The ratio of the mass percentages of '$ C \& H$' and '$C \& O $' of a saturated acyclic organic compound '$X$' are $ 4: 1$ and $3: 4$ respectively. Then, the moles of oxygen gas required for complete combustion of two moles of organic compound '$X$' is _____.

Answer 1

$C : H =4: 1$

$C: O=3: 4$

Mass ratio

$C: H: O=12: 3: 16$

Mole ratio

$C : H : O =1: 3: 1$

Empirical formula $= CH _{3} O$

Molecular formula $= C _{2} H _{6} O _{2}$

(saturated acyclic organic compound)

$\underset{2 mole}{C _{2} H _{6} O _{2}}+\underset{5 mol}{\frac{5}{2} O _{2}} \longrightarrow 2 CO _{2}+3 H _{2} O$

Moles of $O _{2}$ reauired $=5$ moles