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Physics, 10.02.2021 16:00 pobruce53

Un objet de fer a été place dans l eau de l une de ces sources serait rongé au bout d un certain temps. Afin d'étudier le phénomène on réalise l'expérience détailler dans le texte si après dans un tube a essaie contenant de la poudre a de fer on verse quelque millimètre d acide chlorhydrique concentre on observe alors un dégagement gazeux. Afin d identifier les produit de la transformation on realise alors deux testes le premier est le teste a la flamme on entend une légère détonation le deuxième teste consiste a verser de la soude dans une solution a surnage: on obtient un précipiter vert les ion fer2 sont donc présent faire le schéma légende de l expérience correspondant au deuxième teste

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