Question

How many moles of methane are required to produce 88g of co2 after combustion?

Answer 1

CH4 + 2O2 -> CO2 + 2H2O

GRAM MOLECULAR MASS OF CO2 = 12 +2(16) = 44g

From the reaction it is clear that 1 mole of methane on complete combustion produces 44g (1 mole) of carbon dioxide.

therefore moles of CH4 required to produce 88g of CO2 are:

(88) * (1/44) = 2 moles

Answer 2

Chemical Equation:

CH₄+ 2 O₂ ------------------->  CO₂ + 2H₂O

now,

molecular mass of CO₂ = 12 + 2 * 16 = 44 gm

By Chemical equation,

1 mole of CH₄ on complete combustion produces 1mole (44gm) of CO₂.

∴ moles of CH₄ required to produce 88gm CO₂ = 88 / 44 = 2 moles.

So, moles of methane is required to produce 88g of CO₂ after combustion = 2 moles.