Exercice 3: équilibre les équations-bilans Niveau Facile :
.....C + ......CO₂ ----> ......CO
......CH⁴ + ......H₂O ----> CO + ......H₂
......Cu + ......0₂ ----> ......CuO
......H₂ + ......O₂ ----> ......H₂O
......Fe + ......0₂ -----> ......Fe³O⁴
.....C + ......CO₂ ----> ......CO
......CH⁴ + ......H₂O ----> CO + ......H₂
......Cu + ......0₂ ----> ......CuO
......H₂ + ......O₂ ----> ......H₂O
......Fe + ......0₂ -----> ......Fe³O⁴
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Réponse :
Explications :
C + CO₂ → 2CO
CH₄ + H₂O → CO + 3H₂
2Cu + O₂ → 2CuO
2H₂ + O₂ → 2H₂O
3Fe + 2O₂ → Fe₃O₄