AP Chemistry· difficulty 3/5
For 2 H₂ + O₂ → 2 H₂O: starting with 4.0 g H₂ and 16 g O₂, the limiting reagent is
Neither
H₂
Both equally
O₂
Explanation
n(H₂) = 4.0/2 = 2 mol. n(O₂) = 16/32 = 0.5 mol. Need O₂/H₂ = 0.5. Have 0.5/2 = 0.25 < 0.5 → O₂ is limiting.
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