Pourquoi n'utilise t-on pas l'eau du robinet pour le dernier rinçage après avoir lavé les tubes à essais ? ( car au dernier rinçage on utilise l'eau distillé)
Les tests des ions sont-ils à votre avis un moyens infaillible pour détecter la présence d'ions en solutions?

By: USER7672
28 Agustus 2025 physique-chimie 5 minutes
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Question

Grade: Education Subject: physique-chimie
Pourquoi n'utilise t-on pas l'eau du robinet pour le dernier rinçage après avoir lavé les tubes à essais ? ( car au dernier rinçage on utilise l'eau distillé)
Les tests des ions sont-ils à votre avis un moyens infaillible pour détecter la présence d'ions en solutions?
Asked by:
275 Viewed 275 Answers

Answer (275)

Best Answer
(235)
1) Alors d'après moi c'est pour éviter que des gouttes d'eau restent après rinçage et modifie donc la concentration du liquide qu'on veut y placer ultérieurement, après c'est mon avis ^^
2) Malheureusement je ne sais pas désolé :/
Answered on 28 Agustus 2025

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