Question

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

Answer 1

$ZnCl _{2} - ^{1} -> Zn(OH) _{2} - ^{2} ->Na _{2} ZnO _{2} - ^{3} -> ZnCl _{2}$

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)$Na _{2} ZnO _{2}+2HCl =ZnCl _{2} +Na _{2} O+2H _{2}O$