Question

写化学方程式

Answer 1

19.SO2+Na2CO3=Na2SO3+CO2
20.2SO2+Na2CO3+H2O=2NaHSO3+CO2
21.Ba(OH)2+H2SO4=BaSO4↓+2H2O
22.这个应该写离子方程式了。Ba2+ +H+ +OH- +SO42-=BaSO4↓+H2O
23.NaHSO4+NaHCO3=Na2SO4+H2O+CO2↑
24.2NaHCO3+Ca(OH)2=CaCO3↓+Na2CO3+2H2O
25.NaHCO3+Ca(OH)2=CaCO3↓+NaOH+H2O
26.Ca(HCO3)2+NaOH=CaCO3↓+NaHCO3+H2O
27.Ca(HCO3)2+2NaOH=CaCO3↓+Na2CO3+2H2O
28.Ba(HCO3)2+NaHSO4=BaSO4↓+NaHCO3+H2O+CO2↑
29.Ba(HCO3)2+2NaHSO4=BaSO4↓+Na2SO4+2H2O+2CO2↑
30.NH4HSO3+NaOH=NaNH4SO3+H2O
31.NH4HSO3+2NaOH=Na2SO3+H2O+NH3·H2O
32.Mg(HCO3)2+2Ca(OH)2=2CaCO3↓+Mg(OH)2↓+2H2O
33.2Na+2H2O=2NaOH+O2↑
34.AlCl3+4NaOH=3NaCl+NaAlO2+2H2O
35.Cu+2FeCl3=CuCl2+2FeCl2
36.Cl2+2Fe2+=2Cl- +2Fe3+、Fe3+ +3SCN-=Fe(SCN)3