1
Na₂CO₃+Ca(ClO)₂=CaCO₃↓+2NaClO
NaClO+CO2+H2O=NaHCO3+HClO
2
2Cs+2H₂O====2CsOH+H₂↑
3
Cu+FeSO4==Fe+CuSO4
4
4Hg(SCN)₂ =4HgS + 2CS₂ + 3(CN)₂↑ + N₂↑
5
4 Li + O₂ = 2 Li₂O
补充题学名：墨鱼;乌贼