QJEEM22Ch8d4c: JEE Main 2022 Chemistry - Class 11 JEEM22Ch8d4c Solution: CNG is an important transportation fuel. When 100 g CNG is…

Initially,

Mass of CNG(CH₄) = 100 gm

$\therefore$ Moles of CH₄ = ${{100} \over {16}}$ = 6.25 moles

Mass of O₂ = 208 gm

$\therefore$ Moles of O₂ = ${{208} \over {32}}$ = 6.5 moles

From reaction you can see,

1 mole of CH₄ react with 2 mole of O₂

$\therefore$ 6.25 mole of CH₄ react with 6.25 $\times$ 2 = 12.5 moles of O₂

But here only 6.5 moles of O₂ present

So, O₂ will act as limiting reagent.

$\therefore$ Produced CO₂ will depends on moles of O₂.

From 2 moles of O₂ 1 mole of CO₂

$\therefore$ From 6.5 moles of O₂ ${{6.5} \over {2}}$ moles of CO₂ produced.

$\therefore$ Weight of CO₂ = ${{6.5} \over {2}}$ $\times$ 44 = 143 gm