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QCM6 du CCB : nombre de mole et Urée


Go to solution Solved by MOoodLeEEee,

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Posted

Bonjour,

Concertant l'item D du QCM6 du CCB, je ne comprend pas pourquoi dans la correction dn le delta du nombre de mole est égale à -3:

- A gauche, on a 1 mole de CO2 et 2 moles de NH3, donc 3 moles

- A droite, on a 1 mole de CO(NH2)2 et 1 mole de H2O donc 2 moles

Or dn= 2-3 = -1 donc pourquoi dans la correction, on trouve dn = -3 ?

 

QCM6.PNG

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