Please rapid
Ca + ..... = Ca(OH)₂
CaO + ..... = Ca(OH)₂
Ca(OH)₂ + ..... = CaCO₃


Răspuns :

Ca+H2O=Ca(OH)2
CaO+NaOH=Ca(OH)2
Ca(OH)2+CO2=CaCO3
corect ar fi asa>
Ca+2H2O= Ca(OH)2+H2
CaO+H2O= Ca(OH)2
Ca(OH)2+CO2=CaCO3+H2O