Question

Stabileste coeficietintii in urmatoarele reactii:
1.)Al+Cl2=AlCl3
2.)CuSO4+Zn=ZnSO4+Cu
3.)P2O5 +H2O=H3PO4
4.)NaHCO3=NaCO3+H2O+CO2

Answer 1

Raspuns:
1.)2Al+3Cl2=2AlCl3
2.)2CuSO4+2Zn=2Cu+2ZnSO4+2Cu
3.)P2O5+3H2O=2H3PO4
4.)2NAHCO3=NACO3+H2O+CO2

Answer 2

1...2Al+3Cl2=2AlCl3
2...2CuSO4+2Zn=2Cu+2ZnSO4+2Cu
3...P2O5+3H2O=2H3PO4
4...2NAHCO3=NACO3+H2O+CO2