1. N2+O2=2NO
2.<span>3Ba+N2=Ba3N2
3. NH3+H2SO4=(</span>NH4)2<span>SO4
</span><span>(NH4)2SO4 ---(t</span>°)<span>> NH3 + NH4HSO4
</span><span>NH3+O2=N2+H2O
</span>
Са3(РО4)2+Н2О ZnCL2+H2SO3
CuCl2 --> Cu(OH)2 --> CuO --> CuSO4<span>↓(осадок)</span>
1) Cu+2HCl --> CuCl2+H2
2) CuCl2+2NaOH --> Cu(OH)2+2NaCl
3) Cu(OH)2 --> CuO+H2O
4) CuO+H2SO4 --> CuSO4+H2O
Cu(+2)+2Cl(-) ---> Cu(+2)+2OH(-) --> Cu(2+) + O(+2) --> CuSO4↓(Осадок)