Bonjour, j'ai eu un peu de mal avec cette exercice pouvez vous m'aider
Equilibrer les équations suivantes :
1) ......Fe²⁺(aq) + .....HO⁻(aq) --> .....Fe(OH)₂(s)
2) .....Zn(s) + ....H⁺(aq) --> .....Zn²⁺(aq) + ......H₂(g)
3) .....Fe³⁺(aq) + .....I⁻(aq) --> ......Fe²⁺(aq) + .....I₂(aq)
4) .....Mg(OH)₂(s) + ......H³O⁺(aq) --> .....Mg²⁺(aq) + .....H₂O(l)
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