In the complete combustion of $$C_{n}H_{2n+2}$$, the number of oxygen moles required is:
A
$$\left ( \dfrac{n+2}{2} \right )O_{2}$$
B
$$\left ( \dfrac{n+1}{2} \right )O_{2}$$
C
$$\left ( \dfrac{3n+1}{2} \right )O_{2}$$
Correct option is C. $$\left ( \dfrac{3n+1}{2} \right )O_{2}$$
Reaction for complete combustion of $$\mathrm{C_nH_{2n+2}}$$:
$$\mathrm{C_nH_{2n+2} + (\cfrac{3n+1}{2})O_2 \rightarrow nCO_2 + (n+1)H_2O}$$
Therefore, in the complete combustion of $$\mathrm{C_nH_{2n+2}}$$, the no. of moles of oxygen required are $$\cfrac{3n+1}{2}$$
Hence, Option "C" is the correct answer.