CH4 + 202 + CO2 + 2H2O

How many grams of CO2 will be produced from 15.0 g of CH4 and 114 g of O2?

Mass = 41.36 g

Explanation:

Given dа ta:

Mass of CH₄ = 15 g

Mass of O₂ = 114 g

Mass of CO₂ produced = ?

Solution:

Chemical equation:

CH₄ + 2O₂ → CO₂ + 2H₂O

Number of moles of CH₄:

Number of moles = mass / molar mass

Number of moles = 15 g / 16 g/mol

Number of moles = 0.94 mol

Number of moles of O₂:

Number of moles = mass / molar mass

Number of moles = 114 g / 32 g/mol

Number of moles = 3.6 mol

Now we will compare the moles of CO₂ with both reactant.

O₂ : CO₂

2 : 1

3.6 : 1/2*3.6 = 1.8 mol

CH₄ : CO₂

1 : 1

0.94 : 0.94

Number of moles of CO₂ produced by CH₄ are less so it will limiting reactant.

Mass of CO₂:

Mass = number of moles * molar mass

Mass = 0.94 mol * 44 g/mol

Mass = 41.36 g