How many grams of CO₂ are produced from 125 g of O₂ and excess CH₄ ?
CH₄ + 2O₂ → CO₂ + 2H₂O

Question

How many grams of CO₂ are produced from 125 g of O₂ and excess CH₄ ? CH₄ + 2O₂ → CO₂ + 2H₂O

Quizplus · Accepted Answer

The balanced chemical equation shows that 1 mole of CH₄ reacts with 2 moles of O₂ to produce 1 mole of CO₂ and 2 moles of H₂O. Therefore, the mole ratio between O₂ and CO₂ is 2:1. First, we need to calculate the number of moles of O₂ in 125 g: molar mass of O₂ = 32 + 16 + 192 = 240 g/mol number of moles of O₂ = 125 g / 240 g/mol = 0.52 mol Since the mole ratio between O₂ and CO₂ is 2:1, the number of moles of CO₂ produced is half of the number of moles of O₂: number of moles of CO₂ = 0.52 mol / 2 = 0.26 mol Finally, we can calculate the mass of CO₂ produced from the number of moles: molar mass of CO₂ = 12 + 16 + 192 + 16 = 236 g/mol mass of CO₂ produced = 0.26 mol x 236 g/mol = 61.4 g Therefore, the answer is D) 85.9 g of CO₂.

How Many Grams of CO2 Are Produced from 125 G

How Many Grams of CO₂ Are Produced from 125 G