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Bellehelena
@Bellehelena
April 2019
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Exercice 19 : Différents précipités
En versant une solution d'hydroxyde de sodium dans deux solutions, Jessica obtient les précipités ci-contre: ( l'une est bleue et l'autre orange)
1.Quels sont les ions contenus dans ces solutions ?
2.Quelles sont les formules des ions ainsi caractérisés ?
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La solution bleue contient de l'ion cuivre II de formule
.
L'autre solution orange contient des ions fers III de formule
.
2 votes
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L'autre solution orange contient des ions fers III de formule .