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QCM 3


Go to solution Solved by La_Mouche,

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Posted

Bonjour,

 

 

En fait, je comprends pas pq dans le sujet 1 le QCM3 il y a un errata? sur le B et que ct faux; alors que normalement moi ça me donne bien 29,25. Ct quoi qui est faux exactement?

 

Mercii!

  • Solution
Posted

Salut, bastitine le dit dans le post des erratas "c'est une solution de NaCl donc i n'est pas égal à 1 mais à 2 (i=p car alpha=1), ainsi la concentration pondérale est égale à 14,625g/L" 

 

bonne soirée !

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