1. Zn+2HCl=ZnCl2+H2
2. ZnO+2HCl=ZnCl2+H2O
ZnO+2+2=+2+H2o
ZnO+2=+H2O
3. Zn(OH)2+2HCl=ZnCl2+2H2O
+2+2+2=+2+2H2O
2+2=2H2O