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CC 2016 UE 3 PURPAN QCM 3


Go to solution Solved by Edgar,

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Posted

Bonjour! je bloque sur cet item qui est vrai mais j'arrive pas a comprendre pourquoi..

 

on mélange 1 L d'une solution de NaCl (M=58,5g) à 0,585g/L avec 1 litre d'une solution de CaCl2 (M=110g) à 0,550g/L et de glucose (M=180 g) à 0,9g/L. La solution obtenue:

A. contient 0,005 Eq/ L de Na+  (VRAI)

 

je trouve FAUX car: 0,585/ 58,5= 0,01 

 

😕😕

  • Solution
Posted

Bonjour 🙂

Attention on mélange un litre plus un autre litre donc cest a diviser par deux ;). 

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