(1): \(2HCL+ZnO\rightarrow H_2O+ZnCl_2\)
(2): \(2KOH+ZnCl_2\rightarrow2KCL+Zn\left(OH\right)_2\)
(3): \(H_2SO_4+Zn\left(OH\right)_2\rightarrow_{ }\rightarrow2H_2O+ZnSO_4\)
(4): \(ZnSO_4+2AgNO_3\rightarrow Zn\left(NO_3\right)_2+Ag_2SO_4\)
\(ZnO+2HCl\rightarrow ZnCl_2+H_2O\)
\(ZnCl_2+2KOH\rightarrow2KCl+Zn\left(OH\right)_2\downarrow\)
\(Zn\left(OH\right)_2+H_2SO_4\rightarrow ZnSO_4+2H_2O\)
\(ZnSO_4+Ba\left(NO_3\right)_2\rightarrow Zn\left(NO_3\right)_2+BaSO_4\downarrow\)