Составить схему электронного баланса и уровнять уравнение:
Zn+4HNO3=Zn(NO3)2+2NO2+2H2O

0 +2
Zn-2e=Zn/1/ окислительная реакция
+5 +4
N+1e=N/2/восстановительная реакция

Здравствуйте,
все в порядке. Реакции можете контролировать здесь, правописание там. Удачи.

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