(1)Zn+2Hcl=Zncl2+Zn
( 2) Cao+H2o=Ca(oH)*2
(3)Caco3====高温cao+co2上箭
(4)Caco3=2Hcl+H2o+Co2上箭
(5)NaoH+Hcl=Nacl+H2o