QJEEM20Ch172b: JEE Main 2020 Chemistry - Class 11 JEEM20Ch172b Solution: The minimum number of moles of O 2 required for complete…

C₃H₈(g) + 5O₂(g) $\to$ 3CO₂(g) + 4H₂O(l)

C₄H₁₀(g) + ${{13} \over 2}$ O₂(g) $\to$ 4CO₂(g) + 5H₂O(l)

$\therefore$ No. of moles of O₂ required to oxidise 1 mole of propane = 5

$\therefore$ No. of moles of O₂ required to oxidise 1 mole of butane = ${{13} \over 2}$

So, No. of moles of O₂ required to oxidise 1 mole of

propane and 2 moles of butane = 5 + 2 $\times$ ${{13} \over 2}$ = 18