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Chimie - concours 2017-2018


paulinemwb
Go to solution Solved by Petit_Bateau,

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Bonjour, ma question concerne le QCM 8 item D :

La transformation des ions NH4+ en ions NO3- correspond à une réaction de réduction de l'azote FAUX 

J'avais mis vrai mais je pense que je n'ai pas bien compter le n.o de l'azote dans les 2 molécules. Quelqu'un pourrait me détailler la démarche ?

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