Question

写出下列反应的化学方程式，再将它们改写成离子方程式

⑴Zn＋ H2SO4――                   离：                                     
⑵Fe2O3＋ HCl――                 离：                                       
⑶ Fe＋ CuSO4――                 离：                                      
⑷ Mg(OH)2＋ HNO3――              离：                                                
⑸ NH3•H2O＋ HCl――              离：                                    
⑹ NaHCO3＋ HCl――                离：                                                                                     

Answer 1

⑴Zn＋ H2SO4=ZnSO4 +H2↑
离： Zn＋ 2H+=Zn2++H2↑

⑵Fe2O3＋ 6HCl=2FeCl3 + 3H2O
离： Fe2O3＋ 6H+=2Fe3+ + 3H2O

⑶ Fe＋ CuSO4=FeSO4+Cu
离：Fe＋ Cu2+=Fe2++Cu

⑷ Mg(OH)2＋ 2HNO3=Mg(NO3)2 +2H2O
离： Mg(OH)2＋ 2H+=Mg2+ +2H2O

⑸ NH3•H2O＋ HCl=NH4Cl +H2O
离： NH3•H2O＋ H+=NH4+ +H2O

⑹ NaHCO3＋ HCl=NaCl+H2O+CO2 ↑
离： HCO3-＋ H+l=H2O+CO2 ↑