Ответы и объяснения

2012-11-01T16:16:50+00:00

2Ca+O2=2CaO

CaO+H2O=Ca(OH)2

Ca(OH)2+Na2CO3=2NaOH+CaCO3

CaCO3+2HCl=CaCl2+H2O+CO2

CaCl2+H2=2HCl+Ca

2012-11-01T16:17:42+00:00

2Ca + O2 = 2CaO

 

CaO + H2O = Ca(OH)2

 

Ca(OH)2 + Na2CO3 = 2NaOH + CaCO3

 

CaCO3 + 2HCl = CaCl2 + H2O + CO2

 

CaCl2 + H2 = 2HCl + Ca