ZnCl2-> Zn(OH)2->Na2ZnO2 --> ZnCl2 осуществить цепочки химических превращений

Zn(OH) _{2} - ^{2} ->Na _{2} ZnO _{2} - ^{3} -> ZnCl _{2} " alt="ZnCl _{2} - ^{1} -> Zn(OH) _{2} - ^{2} ->Na _{2} ZnO _{2} - ^{3} -> ZnCl _{2} " align="absmiddle" class="latex-formula">

1) $ZnCl _{2} +2H _{2}O= Zn(OH) _{2}+2HCl$
2) $Zn(OH) _{2} +Na _{2} O=Na _{2} ZnO _{2} +2H _{2} O$
3) $Na _{2} ZnO _{2}+2HCl =ZnCl _{2} +Na _{2} O+2H _{2}O$