If 4.0 g of hydrogen and 10.0 g of oxygen are mixed according to the equation 2 H₂ + O₂ → 2 H₂O, which is the limiting reagent?

Question

Quizplus · Accepted Answer

Oxygen is the limiting reagent because the stoichiometry of the reaction requires twice as much hydrogen by moles as oxygen. Given the molar masses (H = 1 g/mol, O = 16 g/mol), 4.0 g of hydrogen is 4.0 mol, and 10.0 g of oxygen is 0.3125 mol. The reaction requires a 2:1 ratio of hydrogen to oxygen, but there is more than enough hydrogen to react with the available oxygen, making oxygen the limiting reagent.

If 40 G of Hydrogen and 10