Balance: H₂ + O₂ → H₂O.
A2 H₂ + 2 O₂ → 2 H₂O
BH₂ + O₂ → H₂O
C2 H₂ + O₂ → 2 H₂O
DH₂ + 2 O₂ → 2 H₂O
Answer & Solution
Correct answer: C. 2 H₂ + O₂ → 2 H₂O
Two waters need 4 H and 2 O. Left side: 2 H₂ gives 4 H, and O₂ gives 2 O. So 2 H₂ + O₂ → 2 H₂O.
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