d
\(C : H =4: 1\)

\(C: O=3: 4\)

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)

\(C _{2} H _{6} O _{2}+\frac{5}{2} O _{2} \longrightarrow 2 CO _{2}+3 H _{2} O\)

\(2\, mole\)       \(5 \,mol\)

Moles of \(O _{2}\) required \(=5\) moles