Question

For 2H₂ + O₂ → 2H₂O, a mixture contains 4 mol of the first reactant and 1 mol of the second. Which reactant is limiting?

Accepted Answer

D. O₂ Explanation: The balanced equation fixes the required mole ratio.
Comparison of available amounts shows that O₂ is consumed first.

For 2H₂ + O₂ → 2H₂O, a mixture contains 4 mol of the first reactant and 1 mol of the second. Which reactant is limiting?