a)C---CO2---Na2CO3---CO2---CaCO3
б)Ca---CaO---CaSO4---CaO
в)Fe2(SO4)3---Fe(OH)3---Fe2O3---FeCl3 do 12 00)паж решитее)
б)Ca---CaO---CaSO4---CaO
в)Fe2(SO4)3---Fe(OH)3---Fe2O3---FeCl3 do 12 00)паж решитее)
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CO2+2NaOH=Na2CO3+H2O
Na2CO3+H2O=2NaOH+CO2
CO2+CaO=CaCO3
b)2Ca+O2=2CaO
CaO+H2SO4=CaSO4+H2O
CaSO4+H2O=H2SO4+CaO
B)Fe2(SO4)3+6NaOH=3Na2SO4+2Fe(OH)3
2Fe(OH)3=Fe2O3+H2O
Fe2O3+6HCl=2FeCl3+3H2O
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