Answer to Question #307154 in General Chemistry for maddie

Question

Given the balanced equation:  CH₄ + 2 O₂ → CO₂ + 2H₂O 

If 3.6 moles of CH₄ react in the above reaction, how many moles of oxygen gas, O₂ reacted?

Answer 1

The given balanced equation is

$CH_4 + 2O_2 \longrightarrow CO_2 +2H_2O$

1 mole of methane react with 2 mole oxygen to give one mole carbon dioxide and 2 mole water

So here 3.6 mole of CH₄ react with( 2×3.6) mole of oxygen and 3.6 mole of carbon dioxide and 2× 3.6 mole water

So, mole of oxygen required = 7.2 mole

Mole carbon dioxide = 3.6 mole

And mole of water = 7.2 mole