Question

Stabileste reactiile de inlocuire posibile cu ajutorulscara reactivitatii:
1. Fe+Al2O3=
2.Pb+Zn(NO3)2=
3.Zn+Pb(NO3)2=

Answer 1

1. 2Fe + Al2O3 --> Fe2O3 + 2Al
2. Pb + Zn(NO3)2 --> Pb(NO3)2 + Zn
3. Zn + Pb(NO3)2 --> Zn(NO3)2 + Pb

Answer 2

1.Fe + Al2O3→Fe2O3 + 2Al
2.Pb+Zn(NO3)2→Pb(NO3)2 + Zn
3.Zn + Pb(NO3)2→Zn(NO3)2 + Pb
Succes!