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Sel

QuestionAnswer
Pourquoi le sel est-il indispensable à la vie ? Il participe au maintien de l'hydratation de l'organisme et à l'équilibre de la tension artérielle
Pourquoi observe-t-on des bulles dans l’eau salee au niveau des electrodes de platine ? car il se dégage du dihydrogène et du dichlore
Par quelles réactions ? 2 Cl- → Cl2 + 2 e- 2 H20 + 2 e- → 2 OH- + H2
Created by: Nat380
 

 



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