(1)Zn+H 2SO 4=ZnSO 4+H 2↑;置换反应;
(2)2H 2O 2
2H 2O+O 2↑;分解反应;
(3)Mg+2HCl=MgCl 2+H 2↑;置换反应;
(4)CaCO 3+2HCl=CaCl 2+H 2O+CO 2↑;
(5)2NH 4Cl+Ca(OH) 2=CaCl 2+2H 2O+2NH 3↑
(1)Zn+H 2SO 4=ZnSO 4+H 2↑;置换反应;
(2)2H 2O 2
2H 2O+O 2↑;分解反应;
(3)Mg+2HCl=MgCl 2+H 2↑;置换反应;
(4)CaCO 3+2HCl=CaCl 2+H 2O+CO 2↑;
(5)2NH 4Cl+Ca(OH) 2=CaCl 2+2H 2O+2NH 3↑