Chemistry, 03.03.2021 17:00 myapawesomeox22sq

L'acier est un alliage (Fe+c).On trouve 6.43g d'acier par l'acide sulfurique concentrée pour transformer completement le fer en fe++ dans une solution de V=50ml (notée S) On prélève 10 ml de la solution (S) sur lequel on ajoute une solution de kMno4 0.03mlol. l-¹ en milieu acide , la décoloration cesse pour un volume versée dekMnO4=10 ml ; M(Fe)=56 g. mol-¹
1) Calculer [FE++] dans (S)

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L'acier est un alliage (Fe+c).On trouve 6.43g d'acier par l'acide sulfurique concentrée pour transfo...