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matheo5017
@matheo5017
September 2022
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Bonjour j’ai besoin d’aide svp…
Exercice :
Déterminer, à 25°C, le pH d'une solution d'acide méthanoïque HCOOH (pKa(HCOOH/
HCOO- = 3.8) de concentration :
a) Co=1.5 x 10¹ mol/L
b) Co=1.5 × 10^-3 mol/L
Merci beaucoup !
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matheo5017
May 2023 | 0 Respostas
Bonjour, Est ce que qlq un pourrait me donner une astuce pour convertir simplement sans utiliser le tableau de conversion (trop long) mais en utilisant les puissance de 10 par exemple. Merci beaucoup pour votre astuce.
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