Question

1.
competeaza schema scriind ecuatiile celor patru reactii propuse;Cl2+Na=
Cl2 +Mg=
Cl2 +Zn=
Cl2 +Al=
2.afla substantele X,Y si Z necunoscute.Scrie ecuatiile reactiilor chimice.Hg=Hg+X;
Cu(OH)2=CuO+z;
Z=X+Y

Answer 1

1. Cl2+2Na=2NaCl Cl2+2Mg=2MgCl Cl2+2Zn=2ZnCl Cl2+2Al=2AlCl 2. Cu(OH)2=CuO+H2O z=H2O