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Urgentttt
Dau coroanaaa


UrgenttttDau Coroanaaa class=

Răspuns :

1.Ca+1/2O2=CaO
2.1/2Ca+H2O=1/2Ca(OH)2+1/2H2
3.CaO+H2O=Ca(OH)2
4.CaO+CO2=CaCO3
5.Ca(OH)2+CO2=CaCO3+H2O
6.Ca(OH)2-CaCO3=Ca(HCO3)2.
7.Ca(HCO3)2 + H2SO4 = CaSO4 + H2O + CO2
8.
CaSO4.H2O = (CaSO4)2.H2O + H2O