You react 25.0 g hydrogen gas with 73.7 g oxygen gas. Determine the mass of water that can be produced from these reactants.

Question

Quizplus · Accepted Answer

The balanced chemical equation for the reaction is 2H₂ + O₂ → 2H₂O. The molar mass of H₂ is 2 g/mol, and O₂ is 32 g/mol. 25.0 g H₂ is 12.5 mol, and 73.7 g O₂ is 2.3 mol. O₂ is the limiting reactant, producing 2.3 mol of H₂O, which is 41.4 g. However, the mass of water produced is calculated based on the limiting reactant, which is oxygen, and the total mass of reactants is 98.7 g, so the mass of water produced is 83.0 g.

You React 25