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qcm 321 du livre item 1


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Posted

coucou!! j'ai une question par rapport a la correction d'un item du livre , ca veut dire quoi :" phenylhydrazine=hydrazine qui n'est pas l'hydrazine"  j'ai pas vraiment compris qu'est ce que ca veut dire ?

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Posted

Salut ! 

Alors l'hydrazine "pure", c'est NH2-NH2, et l'hydrazine "pas pure", c'est NH2-N=R ; Ici tu obtiens donc bien une hydrazine, la phénylhydrazine, mais pas l'hydrazine en tant que tel 😉

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