2Na+2H2O--> 2NaOH+ H2
<span><span>Сu + 2H2SO4--> CuSO4 + SO2 + 2H2O</span></span>
<span><span>2Ag+2HCl-->2AgCl+H2</span></span>
<span><span><span>Zn+CuCl2-->ZnCl2+Cu</span></span></span>
<span><span><span><span>Hg+H2O--> не идет</span></span></span></span>
1.Na+H2O-->NAO+H2
2.CU+2H2SO4-->CU(SO4)2+2H2
3.AG+HCL-->AG(CL)2+Y2
4.ZN+CUCL2-->
5.HG+H2O-->