mole ratios in stoichiometry

Question

in the reaction 2CO₂ +2h₂O=C₂H₄+3O₂ the mole ratio of water to oxygen is____.

Answer 1

Hello Genevieve,

2CO₂ +2h₂O=C₂H₄+3O₂

These questions are asking you to look at the coefficients of the balanced equations. A balanced equation will always give you mole ratios of one compound to another that can be used later on for other calculations.

So in this question we have 2 moles of H₂O since the coefficient is 2 and we have 3 moles of O₂ since there is a 3 for the coefficient.

So our mole ratio will be 2:3

What would the mole ratio be for carbon dioxide to oxygen?

Hope that helps!

-Kyle L