alleryNumber of moles of O₂ needed to completely oxidize 1 mole of C₂H₅OH to CO₂ and H₂O:
A1
B2
C3 (C₂H₅OH + 3 O₂ → 2 CO₂ + 3 H₂O)
D6
Answer & Solution
Correct answer: C. 3 (C₂H₅OH + 3 O₂ → 2 CO₂ + 3 H₂O)
**Balance:** C₂H₅OH + 3 O₂ → 2 CO₂ + 3 H₂O.
**Carbon balance:** 2 each side. Hydrogen: 6 each side.
**Oxygen:** 1 + 6 = 4 + 3 = 7 ✓. Needs 3 O₂.
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